How much does a controller cost to buy or repair? | Prices depend on the model and fault [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 (Okada Comfortable Life Laboratory). Only the entries about "controller prices and repair costs"
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

Controller prices and repair costs varied with the model, connection, and fault.

OK Lab, a small company in Japan, offered repairs and replacements based on where the failure occurred.

The current list includes electronic and basic controller upgrades, but no repair tariff.

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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: controller prices and repair costs

The OK Prostate Chip is a small device placed in the urethra (the urine passage) to act on the prostate. A controller supplies power to a vibrating chip's motor and, depending on its design, controls the vibration pattern. The diary describes battery boxes, electronic controllers, and rechargeable versions connected to the chip by a cable. The controller stays outside the body; the June 2019 entry describes a battery box carried in a pocket.

Basic controller replacement cost about ¥500 (about $3 at ¥156 = $1, rate as of 2026-09-04) in December 2018

An entry published in December 2018 addressed concerns about whether the vibrating chip's electrical parts would break quickly. Mr. Okada described battery boxes as simple components that rarely failed except at their electrical connections.

His assessment concerned the battery box, while the entry separately examined weak connections between motors and cables. Mr. Okada offered replacement for about ¥500 (about $3 at ¥156 = $1, rate as of 2026-09-04) when a customer sent the battery box to the company.

(Source: ok-lab's diary, published December 2018)
https://ok-lab.hatenablog.com/entry/20181229/1546064791

Electronic controller prices reflected an optional upgrade with uncertain supply

An entry published in February 2019 placed the IC controller (an electronic vibration-pattern controller) outside the standard chip package. The upgrade added ¥2,000 (about $13 at ¥156 = $1, rate as of 2026-09-04) excluding tax to the planned vibrating-chip price. Mr. Okada explains that OK Lab adapted controllers from purchased products and could not manufacture the electronics itself.

He warned that losing access to those products would also end his ability to supply their controllers. Mr. Okada therefore offered the simple on/off battery box as standard, with electronic control available as an optional upgrade.

(Source: ok-lab's diary, published February 2019)
https://ok-lab.hatenablog.com/entry/2019/02/16/171153

Basic controller prices started lower, but the highest setting raised heat concerns

An entry published in June 2019 introduced a basic adjustable controller at ¥1,000 (about $6 at ¥156 = $1, rate as of 2026-09-04) excluding tax, with 1.5V, 3V, 4.5V, and 6V settings. The package included a holder for 4 AA batteries and 3 dummy batteries (zero-volt placeholders), but no AA batteries.

In Mr. Okada's test, the motor at 6V reached about 65°C in air after roughly 5 minutes. Mr. Okada concluded that prolonged use at 6V carried risks.

(Source: ok-lab's diary, published June 2019)
https://ok-lab.hatenablog.com/entry/2019/06/29/143536

Mini-plugs changed controller replacement costs by separating the electrical parts

An entry published in August 2019 proposed a mini-plug (a small detachable electrical connector) between the chip and its controller. Mr. Okada said this arrangement meant future controller choices would not require buying another chip. His planned plug charges were ¥1,000 (about $6 at ¥156 = $1, rate as of 2026-09-04) excluding tax on the chip cable and ¥1,000 (about $6 at ¥156 = $1, rate as of 2026-09-04) excluding tax on the controller side.

Battery boxes themselves were listed at ¥500 (about $3 at ¥156 = $1, rate as of 2026-09-04) excluding tax. Examples priced an existing-chip conversion at ¥2,000, (about $13 at ¥156 = $1, rate as of 2026-09-04) a plug-equipped battery box at ¥1,500, (about $10 at ¥156 = $1, rate as of 2026-09-04) and a plug-equipped electronic controller at ¥3,000 (about $19 at ¥156 = $1, rate as of 2026-09-04). Mr. Okada proposed the plugs for customers wanting controller choice or separate replacement of a chip and its controller.

(Source: ok-lab's diary, published August 2019)
https://ok-lab.hatenablog.com/entry/2019/08/03/145816

Rechargeable controller prices included a USB socket in December 2019

An entry published in December 2019 introduced a 4.5V rechargeable controller alongside the existing 3V battery-powered version. The rechargeable unit cost ¥2,500 (about $16 at ¥156 = $1, rate as of 2026-09-04) excluding tax, including its USB socket (the connector for the chip's cable). Direct attachment to the chip was not offered for this controller.

Charging took 60–90 minutes; reported running time was 5 hours with an 8mm motor or 3 hours with a 10mm motor. Mr. Okada accepted it as a custom order because he could not confirm a stable parts supply. He specified a chip with a USB connector for this option, without changing the chip price.

(Source: ok-lab's diary, published December 2019)
https://ok-lab.hatenablog.com/entry/2019/12/07/162608

Bluetooth controller prices included conversion work and the maker's business risks

In an entry published in December 2021, Mr. Okada introduced a Bluetooth controller (wireless control through a phone app). The unit came from a German rechargeable vibrator adapted to control the vibrating chip. The controller cost ¥12,000 (about $77 at ¥156 = $1, rate as of 2026-09-04) excluding tax, while the pictured plain vibrating chip and controller together cost ¥15,000 (about $96 at ¥156 = $1, rate as of 2026-09-04) excluding tax.

Mr. Okada attributed the controller price to buying the original product, conversion work, and risks involving defects and stock. He described app functions for saved patterns, music, surrounding sounds, and remote control. Mr. Okada recommended the Satisfyer phone app for these additional functions.

(Source: ok-lab's diary, published December 2021)
https://ok-lab.hatenablog.com/entry/2021/12/18/123756

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The maker's answer to controller prices and repair costs

The diary's responses were stronger connections, fault-specific repair charges, and temporary replacement hardware.

Controller repair concerns led to stronger joints and protection against bending

An entry published in December 2018 describes Mr. Okada's destructive tests on about 100 vibrators across 3 types. He reports that all broke at the cable-to-motor connection.

He described improved connection strength, but identified repeated bending as a remaining cause of wire failure. Mr. Okada proposed reinforced joints against pulling damage and flexible protection around cable connections to reduce stress from bending.

(Source: ok-lab's diary, published December 2018)
https://ok-lab.hatenablog.com/entry/20181229/1546064791

Controller repair costs were lower for wiring faults than failed electronics

In an entry published in August 2019, a customer reported that their vibrating chip stopped after 1 or 2 uses. They found a broken wire inside the controller and a joint that appeared merely twisted together. The customer reported restored operation after repair, and Mr. Okada apologized for the poor connection.

His repair quote was ¥500 (about $3 at ¥156 = $1, rate as of 2026-09-04) excluding tax for a simple broken wire, or ¥2,000 (about $13 at ¥156 = $1, rate as of 2026-09-04) for failed electronics. He named reversed batteries as one possible cause of electronic failure. Mr. Okada offered free repair for early failures such as a broken wire after 1 or 2 uses.

(Source: ok-lab's diary, published August 2019)
https://ok-lab.hatenablog.com/entry/2019/08/17/132641

Controller prices stayed unchanged during the temporary switch to replacement hardware

In an entry published in March 2022, Mr. Okada reported that most controllers in a newly opened Chinese-made batch had failed electronics. They ran the motor as if connected directly to batteries, regardless of the switch. He considered an emergency retail purchase but abandoned it because of limited stock and his concerns about defects.

Instead, he chose a controller sold by a Japanese manufacturer, offering 120 vibration modes. His planned price was ¥3,000 (about $19 at ¥156 = $1, rate as of 2026-09-04) excluding tax, but he quoted the temporary substitute at ¥2,000 (about $13 at ¥156 = $1, rate as of 2026-09-04) while awaiting working stock. Mr. Okada offered that substitute to fulfill electronic-controller orders until replacement units arrived.

(Source: ok-lab's diary, published March 2022)
https://ok-lab.hatenablog.com/entry/2022/03/12/122940

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How controller prices and repair costs changed over time

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OK Prostate Chip products related to controller prices and repair costs

The current list prices the electronic upgrade at ¥2,200 (about $14 at ¥156 = $1, rate as of 2026-09-04) and the basic upgrade at ¥1,100, (about $7 at ¥156 = $1, rate as of 2026-09-04) both including tax.

Products that appear in these entries

(Source: ok-lab's diary, published October 2020)
https://ok-lab.hatenablog.com/entry/2020/10/17/121023

(Source: ok-lab's diary, published October 2025)
https://ok-lab.hatenablog.com/entry/2025/10/25/122907

Products the diary mentioned as alternatives

The diary names no alternative.

Older rechargeable, mini-plug, and Bluetooth controller builds: No matching product can be confirmed on the current list.

An entry published in March 2019 ended the provisional ¥6,000 (about $38 at ¥156 = $1, rate as of 2026-09-04) excluding tax offer for the long vibrating chip. No matching product can be confirmed on the current list.

(Source: ok-lab's diary, published March 2019)
https://ok-lab.hatenablog.com/entry/2019/03/23/173222

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Common worries about controller prices and repair costs

The reader exchanges distinguish repair eligibility, connector charges, and a request to credit an omitted controller.

"Can controller repair costs be waived for an early fault?"

In a May 2019 entry, a customer asked about repair costs after their recently purchased vibrating chip developed an intermittent connection. He quoted ¥1,080 (about $7 at ¥156 = $1, rate as of 2026-09-04) when a cable fault could be located; damage within 3cm of the chip meant motor-and-cable replacement at ¥3,240 (about $21 at ¥156 = $1, rate as of 2026-09-04). Mr. Okada quoted controller replacements at ¥2,160 (about $14 at ¥156 = $1, rate as of 2026-09-04) for electronic control and ¥1,080 (about $7 at ¥156 = $1, rate as of 2026-09-04) for a basic battery box.

The diary does not record whether the customer sent the device for repair. Mr. Okada distinguished those paid repairs from faults inside the resin-covered connection (resin being the material protecting that joint). For a fault in that protected section, Mr. Okada offered free repair as an initial defect.

(Source: ok-lab's diary, published May 2019)
https://ok-lab.hatenablog.com/entry/2019/05/18/150144

"Do controller prices include the USB connector?"

In an entry published in February 2020, a customer asked how to order the pictured chip with two controllers. Mr. Okada's quote listed each rechargeable electronic controller at ¥2,200 (about $14 at ¥156 = $1, rate as of 2026-09-04), with a separate ¥550 (about $4 at ¥156 = $1, rate as of 2026-09-04) charge for its USB socket. The initial proposal paired a rechargeable controller with a basic battery controller.

The customer chose two rechargeable electronic controllers and confirmed the revised specification. Mr. Okada reported that the new 10mm motor stopped below about 2.8V. He recommended rechargeable controllers because that motor required frequent battery replacements.

(Source: ok-lab's diary, published February 2020)
https://ok-lab.hatenablog.com/entry/2020/02/15/144151

"Can controller prices be credited toward USB waterproofing?"

In an entry published in February 2026, a customer requested a vibrating chip with waterproofing at its USB connection. The customer did not want a controller and asked for that omission to offset the extra waterproofing charge. The diary does not record whether that credit was accepted.

(Source: ok-lab's diary, published February 2026)
https://ok-lab.hatenablog.com/entry/2026/02/21/122935

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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.