How much do lock-on and shell-type chips cost? | The base chip and custom work have separate prices [OK Prostate Chip]

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 "lock-on and shell-type chip prices"
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.

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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

Lock-on charges vary by design, and shell reinforcement can carry a separate fee.

OK Lab, a small company in Japan, quotes the base chip and custom connection work separately.

Current base-chip prices appear below; custom attachments are documented through dated diary quotes.

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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.

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Before you read: key terms

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What happens: lock-on and shell-type chip prices

The OK Prostate Chip is a small device placed in the urethra (the urine passage) to act on the prostate. A lock-on loop (a curved attachment behind the chip) is intended by Mr. Okada to help keep it in position. It sits in the bulbar urethra (a wider area of that passage), according to his descriptions. Shell reinforcement is a separately priced treatment he labels as protection against ceramic-chip breakage.

Key-ring loop prices covered attachment work beyond the base chip

In an entry published in August 2024, Mr. Okada introduced a key-ring-style loop made from parallel cable (paired electrical cord). Its price was the ordinary chip price plus ¥2,000 (about $13 at ¥156 = $1, rate as of 2026-09-04), tax excluded, for a loop section up to 10 cm. Each additional 5 cm cost ¥500 (about $3 at ¥156 = $1, rate as of 2026-09-04), tax excluded.

The example used a slim ceramic chip, and the listed charge covered the attachment rather than the complete device. Mr. Okada says ceramic, resin, and stainless-steel chips can accept this connection, while glass chips cannot.

(Source: ok-lab's diary, published August 2024)
https://ok-lab.hatenablog.com/entry/2024/08/17/122842

The curved lock-on price introduced a different cable attachment

In an entry published in August 2024, Mr. Okada added a curved bulge to the cable loop. This version cost the chip price plus ¥3,000 (about $19 at ¥156 = $1, rate as of 2026-09-04), tax excluded, through 10 cm, with ¥500 (about $3 at ¥156 = $1, rate as of 2026-09-04) for each additional 5 cm. He described a bend of roughly 60–80 degrees in the attachment.

Mr. Okada believed this curved bulge could provide support closer to the chip. He suggested shorter versions might be more convenient because the design relied less on the loop near the penile tip.

(Source: ok-lab's diary, published August 2024)
https://ok-lab.hatenablog.com/entry/2024/08/24/122906

A motorized lock-on price included cable, thread, and assembly charges

In an entry published in September 2024, Mr. Okada described separate charges for a motorized cable lock-on. Beyond the motorized chip, the quote added ¥1,000 (about $6 at ¥156 = $1, rate as of 2026-09-04) for cable and ¥1,000 (about $6 at ¥156 = $1, rate as of 2026-09-04) for nylon thread, both tax excluded. Assembly through 10 cm cost ¥2,000 (about $13 at ¥156 = $1, rate as of 2026-09-04), tax excluded.

Each additional 5 cm of joined cable added ¥500 (about $3 at ¥156 = $1, rate as of 2026-09-04), tax excluded. The stated maximum was 20 cm, with assembly priced at ¥3,000, (about $19 at ¥156 = $1, rate as of 2026-09-04) tax excluded. Mr. Okada cautioned that exact loop widths were difficult to promise because the cable changed shape.

(Source: ok-lab's diary, published September 2024)
https://ok-lab.hatenablog.com/entry/2024/09/07/123204

The wire lock-on price introduced another connection with approximate dimensions

In an entry published in November 2024, Mr. Okada introduced a silicone-covered wire lock-on. It used shape-memory wire (wire that returns toward a set shape), with a ¥4,000 (about $26 at ¥156 = $1, rate as of 2026-09-04) surcharge, tax excluded. A mesh stopper (an additional stop between chip and loop) cost ¥2,000 (about $13 at ¥156 = $1, rate as of 2026-09-04), tax excluded.

An order required the chip-to-loop distance, loop length, and bend angle. A requested 20 mm distance could finish around 15–25 mm, so Mr. Okada asked customers to accept approximate dimensions.

(Source: ok-lab's diary, published November 2024)
https://ok-lab.hatenablog.com/entry/2024/11/16/122924

The hybrid lock-on price accompanied a shorter revised design

In an entry published in February 2025, Mr. Okada reported that his earlier hybrid prototype was too long. This hybrid lock-on combined cable and shape-memory wire and carried a ¥5,000 (about $32 at ¥156 = $1, rate as of 2026-09-04) surcharge, tax excluded. He attributed earlier discomfort to a hardened thread joint and changed that joint's covering to rubber.

His suggested attachment length was 4–5 cm, with about 2 cm needed for the curved section. Mr. Okada recommended shorter hybrids, but also said orders of 4 cm or less would not be accepted.

(Source: ok-lab's diary, published February 2025)
https://ok-lab.hatenablog.com/entry/2025/02/08/122932

Adjustable lock-on prices bundled resin stoppers with cable connection work

In an entry published in July 2026, a customer wanted a firm cable stopper for a twin-electrode chip. Mr. Okada considered a single long resin part impractical and instead made a stack of separate stoppers. That trial led to an adjustable lock-on using four-hole cable stoppers (resin parts that hold paired cables).

For an ordinary chip, his minimum addition was ¥5,000 (about $32 at ¥156 = $1, rate as of 2026-09-04), tax excluded, covering two stoppers and a loop-cable connection. Each stopper cost ¥1,500 (about $10 at ¥156 = $1, rate as of 2026-09-04), and the connection cost ¥2,000 (about $13 at ¥156 = $1, rate as of 2026-09-04), both tax excluded. He cautioned that cable length could add charges, and extremely short versions might be impossible.

(Source: ok-lab's diary, published July 2026)
https://ok-lab.hatenablog.com/entry/2026/07/25/123012

The adjustable hybrid lock-on price added more parts and connection work

In an entry published in August 2026, Mr. Okada described an adjustable hybrid prototype with shell reinforcement. Its attachment required two four-hole stoppers at ¥1,500 (about $10 at ¥156 = $1, rate as of 2026-09-04) each, tax excluded, plus three two-hole stoppers at ¥1,000 (about $6 at ¥156 = $1, rate as of 2026-09-04) each, tax excluded. The two-hole parts fixed the wire in place and were about 5 mm wide.

The chip-connection charge was ¥3,000 (about $19 at ¥156 = $1, rate as of 2026-09-04), tax excluded. Mr. Okada described that charge as provisional because the assembly took substantial work. He cautioned that excessive demand might force him to stop offering this version.

(Source: ok-lab's diary, published August 2026)
https://ok-lab.hatenablog.com/entry/2026/08/29/122931

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The maker's answer to lock-on and shell-type chip prices

Mr. Okada's quotes depend on connection requirements, chip material, and the requested dimensions.

Electrical lock-on prices required an individual quote for stainless steel

In an entry published in December 2024, a customer requested a stainless-steel electrode (an electrical-contact chip) with a lock-on attachment. Staff acknowledged having no previous experience making that combination, then accepted the request for development. Mr. Okada reported completing a connection intended to carry current.

He explained that electrical work added charges beyond an ordinary ceramic-chip lock-on connection. Mr. Okada said staff would quote each requested configuration individually.

(Source: ok-lab's diary, published December 2024)
https://ok-lab.hatenablog.com/entry/2024/12/07/122832

The resin lock-on price included separately charged connection preparation

In an entry published in November 2025, a customer requested a single resin screw chip with a wire lock-on. The estimate listed ¥4,400 (about $28 at ¥156 = $1, rate as of 2026-09-04) for the chip, ¥1,100 (about $7 at ¥156 = $1, rate as of 2026-09-04) for connection preparation, and ¥4,400 (about $28 at ¥156 = $1, rate as of 2026-09-04) for the lock-on. No tax status was stated in that quote.

The diary does not record how this custom build felt in use. Mr. Okada explained that the resin chip required an additional connection hole, adding ¥1,100 (about $7 at ¥156 = $1, rate as of 2026-09-04) compared with the ceramic-chip arrangement.

(Source: ok-lab's diary, published November 2025)
https://ok-lab.hatenablog.com/entry/2025/11/15/122921

Adjustable lock-on orders allowed different stopper sizes within the assembly

In an entry published in August 2026, Mr. Okada introduced stopper size choices for the adjustable lock-on. The width bands were S: 6–7 mm, M: 7–8 mm, and L: 8–9 mm, with thickness around 2.5–3 mm. He explained that finished parts were measured and sorted because resin could spread during manufacture.

The existing chip thread carried no additional fee for this attachment. Mr. Okada asked buyers to identify the base chip, each stopper size, and the full cable length, or provide approximate section lengths.

(Source: ok-lab's diary, published August 2026)
https://ok-lab.hatenablog.com/entry/2026/08/01/122916

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How lock-on and shell-type chip prices changed over time

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OK Prostate Chip products related to lock-on and shell-type chip prices

These are current base-product prices, with custom-work charges documented separately in the diary.

Products that appear in these entries

(Source: ok-lab's diary, published April 2025)
https://ok-lab.hatenablog.com/entry/2025/04/26/122909

(Source: ok-lab's diary, published November 2025)
https://ok-lab.hatenablog.com/entry/2025/11/15/122921

(Source: ok-lab's diary, published August 2026)
https://ok-lab.hatenablog.com/entry/2026/08/15/122912

(Source: ok-lab's diary, published August 2026)
https://ok-lab.hatenablog.com/entry/2026/08/22/122905

Products the diary mentioned as alternatives

The diary names no alternative.

For the custom attachments and shell-treated assemblies described above:

No matching product can be confirmed on the current list. The diary does not say what the current state is.

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Common worries about lock-on and shell-type chip prices

The customer questions show how fit and construction requirements affected what Mr. Okada could quote.

"Can lock-on loops replace a wire-linked model's rear chip?"

In an entry published in September 2024, a customer proposed replacing a wire-linked model's rear chip with a cable lock-on. Mr. Okada expected the cable loop to hold its shape less firmly than the original wire-supported chip. He also considered adding a lock-on behind the complete assembly a duplication of its curve, though not necessarily impossible.

For the customer's non-locking cable-loop proposal, staff quoted fixing work at ¥1,650 (about $11 at ¥156 = $1, rate as of 2026-09-04) through 10 cm, plus ¥550 (about $4 at ¥156 = $1, rate as of 2026-09-04) per additional 5 cm. The diary does not record how that requested arrangement felt in use. Mr. Okada did not recommend replacing that rear chip with a cable lock-on.

(Source: ok-lab's diary, published September 2024)
https://ok-lab.hatenablog.com/entry/2024/09/21/122907

"Can a motorized lock-on price include different chip materials?"

In an entry published in April 2025, a customer wanted a curved motorized chip for short sessions. Staff initially said the proposed cable-and-wire combination would be difficult; Mr. Okada then developed a design with partly independent sections. His minimum short-ceramic configuration was quoted at ¥11,000 (about $70 at ¥156 = $1, rate as of 2026-09-04), tax excluded, including the base and connection work.

In the confirmed follow-up published in June 2025, the customer asked to omit a stopper and change the chip material. Mr. Okada accepted omitting the stopper, but the diary does not record a completed revised order. He confirmed ceramic was workable, but second-generation resin was untested; stainless steel appeared beyond his equipment's cutting ability.

(Source: ok-lab's diary, published April 2025)
https://ok-lab.hatenablog.com/entry/2025/04/26/122909

(Source: ok-lab's diary, published June 2025)
https://ok-lab.hatenablog.com/entry/2025/06/07/122954

"Does a longer hybrid lock-on cost more?"

In an entry published in December 2025, a customer asked whether a 5 cm hybrid attachment would be preferable to 4 cm. A previous larger chip's bulge had prevented insertion, although the customer had managed the smaller version. The new quote listed ¥5,500 (about $35 at ¥156 = $1, rate as of 2026-09-04) for each hybrid attachment.

Staff accepted 5 cm at the quoted modification price. The diary does not record whether the new builds resolved the fit problem. Staff favored that length because its curved section could be made more flexible.

(Source: ok-lab's diary, published December 2025)
https://ok-lab.hatenablog.com/entry/2025/12/13/122917

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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.

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Summary of this article

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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.