![Will my repair be free? | Some faults qualify; parts and upgrades may cost extra [OK Prostate Chip]](/img/a/T0318/eyecatch.svg)
This page is based on entries from "ok-lab's diary" (https://ok-lab.hatenablog.com/), the Japanese development diary written by Mr. Okada, founder of OK Lab, a small company in Japan (Okada Comfortable Life Laboratory). Only the entries about "free repairs and services" are summarized here, in order of publication. Past prices and sizes are as written at the time. Current prices come from the official product list (retrieved September 4, 2026). Quotations are translated from Japanese.
Note: This page is a personal reading log by someone with no connection to the maker or the seller. It reflects the source entries as of their publication dates and makes no guarantee of accuracy or safety. The product is not a medical device; talk to a doctor about any health decision. Check the official site for current information. This page contains advertising.
In short
- Free repairs depended on the fault, affected part, and timing.
- Mr. Okada offered limited repairs, replacements, and refunds, with several explicit exclusions.
- The latest supplied entry adds free thin wire coating, but today’s repair terms are not recorded.
If you see blood in your urine, even a small amount or for the first time, do not wait and see. See a urologist right away. If you suddenly cannot urinate, or the device cannot be removed, do not try to fix it yourself. Go to a medical facility, including emergency care, immediately.
About this product
The OK Prostate Chip is a small device that is placed in the urethra (the urine passage) so that it acts on the prostate; the maker sells it in several shapes, sizes and materials. It is made and sold by OK Lab (Okada Comfortable Life Laboratory), a small company in Japan, through its own online store, and prices are in Japanese yen (JPY).
The maker's development diary, "ok-lab's diary", is written in Japanese. This page is an English summary of it, and every quotation is translated. OK Lab ships internationally, so readers outside Japan can order (see "Buying from outside Japan" below).
Product names on this page are plain-English descriptions. The official Japanese product name is shown once in the product table so you can find the same item in the store.
Before you read: key terms
| Term | Plain-English meaning |
|---|---|
| Urethra | The urine passage; it carries urine and is where the chip is placed. |
| Initial defect | A fault treated as present when supplied; this classification could qualify it for free repair. |
| Resin | Material used to cover joints and patch damaged chip surfaces. |
| IC controller | An electronic control unit for a vibrating chip’s motor. |
| USB connector | An electrical cable fitting connecting a vibrating chip and its controller. |
| Retrieval thread | A cord attached to the chip for retrieval. |
| High-pressure sterilization | A treatment used to sterilize returned chips before repair. |
| Nitinol | Nickel–titanium wire used in place of nylon retrieval thread. |
| Silicone coating | A rubber covering; Mr. Okada used it to limit direct wire contact with the body. |
What happens: free repairs and services
The OK Prostate Chip is a device placed in the urethra (the urine passage) to act on the prostate. These entries discuss free work on damaged chips, attached threads, electrical connections, and extras supplied with purchases. The work could affect the chip itself, a thread connected to it, or a vibrating model’s external controller. Mr. Okada distinguished defect correction from replacement parts or changes to an existing product.
Free repair for an oversized long chip depended on inspection
In an entry published in April 2018, a customer requested repair of an oversized custom long chip after bleeding. Mr. Okada offered free repair if inspection confirmed an initial defect (a fault present when supplied). The diary does not record the inspection outcome. Mr. Okada asked for its return and cautioned against casually ordering long chips because of other bleeding reports.
(Source: ok-lab's diary, published April 2018)
https://ok-lab.hatenablog.com/entry/20180421/1524299808
Free repair depended on whether the fault was beneath resin
In May 2019’s entry, a customer asked about repair costs after an electrical fault. Mr. Okada said a fault beneath the resin (the joint-covering material) qualified for free initial-defect repair. The diary does not record whether this repair went ahead.
For cable faults, reconnection was ¥1,080 (about $7 at ¥156 = $1, rate as of 2026-09-04); damage within 3cm required motor-and-cable replacement at ¥3,240 (about $21 at ¥156 = $1, rate as of 2026-09-04). Replacing an IC controller (the motor’s electronic control unit) cost ¥2,160 (about $14 at ¥156 = $1, rate as of 2026-09-04). Mr. Okada asked whether the fault lay inside the resin-covered area.
(Source: ok-lab's diary, published May 2019)
https://ok-lab.hatenablog.com/entry/2019/05/18/150144
Free repair applied when controller wiring failed almost immediately
In an entry published in August 2019, a customer reported a controller failure after 1 or 2 uses. The customer restored operation; Mr. Okada apologized for poor wire connections. His repair schedule listed simple wire breaks at ¥500 (about $3 at ¥156 = $1, rate as of 2026-09-04) excluding tax and IC failure from reversed batteries at ¥2,000 (about $13 at ¥156 = $1, rate as of 2026-09-04). He said wire breaks after 1 or 2 uses qualified for free initial-defect repair.
(Source: ok-lab's diary, published August 2019)
https://ok-lab.hatenablog.com/entry/2019/08/17/132641
Free replacement for initial defects came with a voltage warning
In an entry published in August 2019, a customer reported a semi-long glass vibrating chip stopping after 6V operation. The customer also wanted thinner wiring; Mr. Okada said this would probably require motor replacement. The diary does not record whether this repair was completed. He warned that 6V was outside the motor’s rating, while offering replacement for initial defects.
(Source: ok-lab's diary, published August 2019)
https://ok-lab.hatenablog.com/entry/2019/08/24/125858
Free repair of localized glass damage still involved thread charges
In an entry published in October 2019, a semi-long glass chip’s owner asked about a rough, flaking surface. Mr. Okada offered a free resin patch for small, localized damage. Thread replacement remained chargeable because high-pressure sterilization (treatment before repair) would shrink the thread, he said; the diary does not record whether repair was completed. He advised stopping use if cracks appeared to extend throughout the chip.
(Source: ok-lab's diary, published October 2019)
https://ok-lab.hatenablog.com/entry/2019/10/12/125944
Free motor replacement had an approximate early-failure window
In an entry published in March 2020, a customer described a vibrating chip that stopped intermittently. Mr. Okada accepted it as an initial defect and requested more information about when it stopped. The customer agreed to report further symptoms; the diary does not record whether replacement was completed.
He covered faulty cable contacts and motors failing to restart from certain stopping positions for roughly 2 weeks after delivery. He offered immediate return when the device repeatedly stopped and could not be used.
(Source: ok-lab's diary, published March 2020)
https://ok-lab.hatenablog.com/entry/2020/03/21/143802
The maker's answer to free repairs and services
Free work depended on the part, requested change, and reason for replacement.
Free service covered new chip-side USB fittings, with exclusions
In January 2020’s entry, Mr. Okada offered free chip-side USB connectors (electrical cable fittings) with new vibrating chips. This replaced the usual controller connection. Controller-side fittings and conversions of existing chips remained chargeable. He told new buyers to pay only for the controller-side fitting.
(Source: ok-lab's diary, published January 2020)
https://ok-lab.hatenablog.com/entry/2020/01/25/150127
Free service for silicone coating excluded later peeling repairs
In October 2020’s entry, Mr. Okada offered horn-shaped silicone coating (rubber around a thread connection) free up to 2mm. Lengths of 3–10mm cost ¥500 (about $3 at ¥156 = $1, rate as of 2026-09-04) excluding tax, while 11–20mm cost ¥1,000 (about $6 at ¥156 = $1, rate as of 2026-09-04) excluding tax. He explicitly excluded repair support if the rubber peeled. He asked customers to specify the coating length when ordering.
(Source: ok-lab's diary, published October 2020)
https://ok-lab.hatenablog.com/entry/2020/10/31/121353
Free repair gave way to refunds after wire failures
In an entry published in October 2022, a customer whose wire-loop connector detached wanted a stainless-steel chip instead. Mr. Okada offered free repair but declined the product change, settling the case with a refund. After faults soon after use began, he temporarily suspended sales of both the connector and the 6-wire model. For buyers unwilling to keep those products because of the risks, he offered refunds.
(Source: ok-lab's diary, published October 2022)
https://ok-lab.hatenablog.com/entry/2022/10/01/122944
Free exchange for older concealment plates came with eligibility limits
In April 2023’s entry, Mr. Okada offered a wider-hole replacement for an older external plate for concealing the penis. Free exchange covered owners who requested it and had already achieved concealment with the old small-hole design. He warned that replacement would not necessarily resolve unsuccessful concealment. He asked eligible owners to request replacement by email and allow time for production.
(Source: ok-lab's diary, published April 2023)
https://ok-lab.hatenablog.com/entry/2023/04/22/123057
Repair services excluded upgrades from existing specifications to four threads
In May 2023’s entry, Mr. Okada limited thread replacement to the original configuration. Products sold with 1 or 2 threads could not become 4-thread models through that service. He offered 4-thread replacement only for products bought with that arrangement.
(Source: ok-lab's diary, published May 2023)
https://ok-lab.hatenablog.com/entry/2023/05/13/123004
Free service included temporary thread with a specific price reduction
In March 2025’s entry, threadless builds received a ¥1,000 (about $6 at ¥156 = $1, rate as of 2026-09-04) reduction under a tax-excluded price schedule. Mr. Okada offered a free 20cm nylon retrieval thread (a cord attached for retrieval) to buyers wanting one until safety was confirmed. He cautioned that this thread had no resin fixing it in place and could detach easily.
(Source: ok-lab's diary, published March 2025)
https://ok-lab.hatenablog.com/entry/2025/03/29/122912
Free service covered thin wire coating, while thicker coverage cost extra
In September 2025’s entry, Mr. Okada announced free thin silicone coating along the full length of nitinol thread (nickel–titanium wire). He described it as a safety measure intended to prevent direct metal contact. Thicker coating cost ¥500 (about $3 at ¥156 = $1, rate as of 2026-09-04) excluding tax per 5cm; he warned that thickened sections would not pass through holes in chip accessories. He advised choosing thickness to suit the intended use.
(Source: ok-lab's diary, published September 2025)
https://ok-lab.hatenablog.com/entry/2025/09/06/122911
If you see blood in your urine, even a small amount or for the first time, do not wait and see. See a urologist right away. If you suddenly cannot urinate, or the device cannot be removed, do not try to fix it yourself. Go to a medical facility, including emergency care, immediately.
How free repairs and services changed over time
| Published | What the diary said then |
|---|---|
| Apr 2018 | A recently supplied 35mm linked-chip assembly was rebuilt free after resin separation. |
| Jun 2018 | Threading was included when the main chip and three-hole accessory were purchased together. |
| Mar 2019 | Version 2 conversion cost ¥3,000 (about $19 at ¥156 = $1, rate as of 2026-09-04) excluding tax; external controller connection was free. |
| Nov 2019 | A motor failing after 10 minutes at 6V received an initial-defect replacement. |
| Jan 2020 | A ¥550 (about $4 at ¥156 = $1, rate as of 2026-09-04) refund was promised for a chip-side USB fitting that was free. |
| Oct 2022 | A 6-wire customer deferred the offered free repair of one loose resin covering. |
| Apr 2025 | Existing 0.2mm loop-product buyers were offered the dedicated retrieval wire free. |
The diary does not say what the current state is.
OK Prostate Chip products related to free repairs and services
The product list gives purchase prices, while the diary records separate repair terms.
Products that appear in these entries
| Product (official name) | Price incl. tax | Relation to this topic |
|---|---|---|
| Semi-long glass chip (OKプロステートチップ ガラス素材セミロングタイプ) | ¥4,400 (about $28 at ¥156 = $1, rate as of 2026-09-04) | October 2019: Its owner requested repair after surface flaking. |
| Semi-long glass vibrating chip (OKプロステート核振チップ ガラス素材セミロングタイプ) | ¥6,600 (about $42 at ¥156 = $1, rate as of 2026-09-04) | August 2019: Its owner reported motor failure after 6V operation. |
| Long glass vibrating chip (OKプロステート核振チップ ガラス素材ロングタイプ) | ¥8,800 (about $56 at ¥156 = $1, rate as of 2026-09-04) | June 2019: Its owner requested a smaller motor and ceramic replacement. |
| Curved semi-long ceramic chip (OKプロステートチップ 陶器素材セミロング勾玉タイプ) | ¥5,500 (about $35 at ¥156 = $1, rate as of 2026-09-04) | July 2019: A prickly thread joint prompted a free-coating inquiry. |
| USB connector fitting (USB端子付け加工（核振チップオプション）) | ¥550 (about $4 at ¥156 = $1, rate as of 2026-09-04) | January 2020: An order prompted clarification that a new chip’s own fitting was free. |
| Long ceramic four-point twist chip (OKプロステートチップ 陶器素材ロングタイプ 4点ツイスト) | ¥7,700 (about $49 at ¥156 = $1, rate as of 2026-09-04) | July 2024: Earthquake damage led to an exceptional free repair offer. |
(Source: ok-lab's diary, published June 2019)
https://ok-lab.hatenablog.com/entry/2019/06/15/144142
(Source: ok-lab's diary, published July 2019)
https://ok-lab.hatenablog.com/entry/2019/07/06/152113
(Source: ok-lab's diary, published August 2019)
https://ok-lab.hatenablog.com/entry/2019/08/24/125858
(Source: ok-lab's diary, published October 2019)
https://ok-lab.hatenablog.com/entry/2019/10/12/125944
(Source: ok-lab's diary, published January 2020)
https://ok-lab.hatenablog.com/entry/2020/01/25/150127
(Source: ok-lab's diary, published July 2024)
https://ok-lab.hatenablog.com/entry/2024/07/13/123018
Products the diary mentioned as alternatives
The diary names no alternative.
Historical builds and options: oversized long chip, horn-shaped coating, small-hole concealment plate, threadless loop build, dedicated retrieval wire, and nitinol thread.
No matching product can be confirmed on the current list.
Common worries about free repairs and services
Free service could still involve paying for products, threads, or other work.
"Does free service include returning an unused vibrating chip?"
In an entry published in June 2019, a long glass vibrating chip’s owner wanted a smaller motor and a ceramic chip. Mr. Okada declined chip and motor returns, even unused, but offered free controller transfer with purchase of a new 8mm-motor vibrating chip. Ceramic versions were still in development; the customer acknowledged this, but the diary does not record a subsequent purchase. Mr. Okada asked for only the controller to be sent for the proposed transfer.
(Source: ok-lab's diary, published June 2019)
https://ok-lab.hatenablog.com/entry/2019/06/15/144142
"Can a prickly thread joint qualify for free repair?"
In an entry published in July 2019, a curved semi-long ceramic chip’s owner asked about rubber coating for a prickly thread joint. Mr. Okada offered it free for unused products or those used only once. The diary does not record whether the coating was completed. He warned that altering the joint could damage the thread.
(Source: ok-lab's diary, published July 2019)
https://ok-lab.hatenablog.com/entry/2019/07/06/152113
"Does free repair of a surface include thread replacement?"
In an entry published in January 2020, a customer asked about both thread replacement and a previously supplied chip’s rough surface. Mr. Okada quoted ¥1,100 (about $7 at ¥156 = $1, rate as of 2026-09-04) for a standalone thread replacement and offered free surface treatment if a resin covering was acceptable. The diary does not record whether these repairs were completed. He advised asking about additional charges when fixed accessories were attached to the thread.
(Source: ok-lab's diary, published January 2020)
https://ok-lab.hatenablog.com/entry/2020/01/11/151714
"Did free repair cover earthquake damage to ceramic chips?"
In an entry published in July 2024, a customer asked whether an earthquake-broken ceramic four-point twist chip could be repaired. OK Lab offered free repair as earthquake assistance, provided the damage was repairable; this work would normally have been chargeable. Mr. Okada described undertaking the repair, but the diary does not record the customer’s experience afterward.
The reply warned that resin reinforcement increased thickness and width, affected appearance, and came without a guarantee of repaired strength. Mr. Okada cautioned that the repaired item required gentle handling as the resin hardened.
(Source: ok-lab's diary, published July 2024)
https://ok-lab.hatenablog.com/entry/2024/07/13/123018
Buying from outside Japan
OK Lab ships internationally to countries covered by Japan Post's EMS courier service. Overseas orders are paid in advance by PayPal. Each order carries a ¥400 (about $3 at ¥156 = $1, rate as of 2026-09-04) handling fee, and EMS shipping is charged on top. These terms come from OK Lab's official sales-terms page (written here as plain text, not a link: ok-lab.net/docs/law), checked on September 7, 2026; confirm them on the official store before you order, because they can change.
Summary of this article
| What you wanted to know | The answer |
|---|---|
| In short | Free work had conditions. |
| About this product | OK Lab makes it in Japan; prices are in yen. |
| Key terms | Threads, joints, cables, and controllers had different repair terms. |
| What happens | The fault’s location and timing affected the maker’s response. |
| The maker’s answer | Specific services were free; some upgrades and damage were excluded. |
| Changes over time | Offers expanded and changed; current repair terms are not recorded. |
| Related products | Current purchase prices are separate from historical repair charges. |
| Common worries | Transfers, coatings, and exceptional repairs had separate limits. |
| Buying outside Japan | Advance PayPal payment, a ¥400 (about $3 at ¥156 = $1, rate as of 2026-09-04) handling fee, and EMS shipping apply. |
Source: ok-lab's diary (Okada Comfortable Life Laboratory). The original entries are in Japanese; quotations on this page are translated. Photos and videos are on the original entries.
This article is a summary of the maker's development diary. The product is not a medical device and no result is guaranteed. If anything feels wrong or worries you, see a doctor. Prices, specifications and cautions change, so confirm the latest information on the official blog and the official site. Questions about ordering and shipping go to the seller.