Can I connect my own controller? | Some custom connections were possible [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 "customer-supplied parts and connections to other companies' products" 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

• OK Lab, a small company in Japan, has accepted customer-supplied cables and connectors, subject to limits.
• Mr. Okada makes acceptance depend on the supplied parts, connection strength, and available testing.
• The current list includes USB connector fitting, but does not confirm every historical custom build.

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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: third-party controller compatibility

The OK Prostate Chip is a small device placed in the urethra (the urine passage) to act on the prostate. These entries concern connections between its vibrating models or electrode versions (chips with electrical contacts) and equipment made by other companies. Customers supplied cables, connectors, or complete devices, and Mr. Okada assessed whether his workshop could connect them. The wiring extended from the chip toward a controller (the external power and control unit), with different limits for each proposed combination.

Custom cables could require motor replacement when existing wiring was sealed

An entry published in August 2019 describes a repair request for a medium-length glass vibrating chip that had stopped working. The customer also wanted supplied 0.4mm wires fitted.

Mr. Okada explained that epoxy (a resin holding and insulating the wiring) protected the motor's delicate electrical connections. He thought disturbing that fixed connection carried a high risk of damage. The diary does not record whether this repair was completed. His reply therefore offered the requested wire change with replacement of the motor as well.

(Source: ok-lab's diary, published August 2019)
https://ok-lab.hatenablog.com/entry/2019/08/24/125858

Stiffer custom cables carried an added charge after the first build

An entry published in October 2019 records a customer's request for stiffer cable on a vibrating chip. The finished example had 20cm of stiffer cable near the chip, followed by the standard cable.

Mr. Okada waived the extra charge for this first example. He announced ¥1,000 (about $6 at ¥156 = $1, rate as of 2026-09-04) excluding tax for later requests because the additional connection took more work. The diary does not record the customer's assessment of the finished cable. Mr. Okada offered to consider customer-supplied cable provided it was not excessively large.

(Source: ok-lab's diary, published October 2019)
https://ok-lab.hatenablog.com/entry/2019/10/12/125944

R-1 controller compatibility depended on its original recognition hardware

An entry published in November 2019 records a request to connect a vibrating chip to the RENDS R-1 controller. The corrected entry put the proposed compatible product launch on hold because R-1 required its dedicated cable.

Later that month, Mr. Okada reported that communication with an electronic recognition chip was necessary; a direct controller connection did not work. His successful prototype retained that recognition hardware, with a USB socket beyond it and a USB plug on the vibrating chip.

He reported 4 hours of continuous testing without problems, then accepted the customer's order. His proposed connection service required the recognition cable as well as the controller.

(Source: ok-lab's diary, published November 2019)
https://ok-lab.hatenablog.com/entry/2019/11/23/162919

(Source: ok-lab's diary, published November 2019)
https://ok-lab.hatenablog.com/entry/2019/11/30/164020

Time Rotor USB conversion succeeded after Mr. Okada inspected the device

An entry published in December 2019 records a customer's request to connect an existing Time Rotor to a vibrating chip. Mr. Okada initially withheld a decision because he had never examined the device.

He said an unsuccessful conversion would be returned with its original connection restored. A later December entry explicitly followed up on that request and reported a successful USB connection. Following this result, Mr. Okada invited requests from other owners of the same device.

(Source: ok-lab's diary, published December 2019)
https://ok-lab.hatenablog.com/entry/2019/12/14/151232

(Source: ok-lab's diary, published December 2019)
https://ok-lab.hatenablog.com/entry/2019/12/21/150646

Very thin custom cables required a separate thread for strength

An entry published in June 2020 records a customer's request for very fine supplied wires on several vibrating chips. Mr. Okada thought the wire resembled, or was thinner than, his 0.6mm cable.

He considered its conductors suitable for soldering, but expected repeated sharp bending to cause breakage. Testing of the cable covering's bond with epoxy was still pending. The diary does not record whether these custom builds were delivered. His acceptance required nylon thread to carry 100% of the retrieval load because he considered the cable too fragile.

(Source: ok-lab's diary, published June 2020)
https://ok-lab.hatenablog.com/entry/2020/06/27/120614

Shape Mate custom connections passed only a basic current check

An entry published in May 2021 describes a request for a two-pole electrode chip compatible with Shape Mate equipment. Mr. Okada could not modify the unfamiliar plug itself, but offered to examine its attached cable for a possible connection.

The supplied cable contained fiber-like strands without a metal core and could not be soldered to his wiring. He instead reported a crimp connection (a cable joint used instead of soldering). His meter check established only that current passed; he could not test operation with the customer's equipment. Mr. Okada urged caution and gave no operating guarantee.

(Source: ok-lab's diary, published May 2021)
https://ok-lab.hatenablog.com/entry/2021/05/01/130245

Stainless-steel controller connections gained a plug option with different waterproofing

An entry published in July 2025 describes a customer whose equipment could not accept the usual snap connectors (button-shaped electrical connections). The customer wanted a plug on a two-pole stainless-steel electrode chip.

OK Lab initially said a straightforward substitution would compromise the waterproof arrangement around the twisted cable. The resulting specification included a sealed transition at the tube's end to red-and-black parallel cable (two wires joined side by side). The plug was on that outer cable, and the entry announced that this custom version could now be made. OK Lab's reply advised that the extra work would increase the charge, without stating an amount.

(Source: ok-lab's diary, published July 2025)
https://ok-lab.hatenablog.com/entry/2025/07/05/122905

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The maker's answer to third-party controller compatibility

Mr. Okada limits custom work according to the supplied parts, attachment strength, and tests his workshop can perform.

Custom controller connections did not include modifying the treatment device

In an entry published in December 2018, Mr. Okada discussed connections between electrode chips and external electrical treatment equipment. He said OK Lab would not modify terminals on the treatment device itself.

He left responsibility for those alterations with the customer and said he could not judge compatibility with the equipment. He also declined requests from people without experience of that equipment. His warning was that electrical exposure could be life-threatening and that compatibility and safety were beyond what he could establish.

(Source: ok-lab's diary, published December 2018)
https://ok-lab.hatenablog.com/entry/20181208/1544250742

Custom cables for motorless chips were generally outside the service

An entry published in November 2022 records a customer's proposal for a twisted cable connection. Mr. Okada said he could consider supplied cable for a vibrating chip's motor, citing earlier completed jobs with customer-supplied wires.

He distinguished those electrical connections from attachment to a chip without a motor. Such cable-to-chip requests were generally refused, as were requests to attach stiff cable directly to the chip. His reply limited the offer to considering a connection with the motor.

(Source: ok-lab's diary, published November 2022)
https://ok-lab.hatenablog.com/entry/2022/11/26/122622

Larger custom connectors could be fitted without a working equipment test

An entry published in September 2024 describes a customer seeking larger snap connectors for equipment using 3.5mm button contacts. The customer supplied the parts, and Mr. Okada reported successful attachment and finishing.

However, OK Lab had no matching equipment for an operating test. Mr. Okada limited verification to checking whether current passed through the connection. He offered similar work on the condition that customers obtained and supplied the larger buttons themselves.

(Source: ok-lab's diary, published September 2024)
https://ok-lab.hatenablog.com/entry/2024/09/28/122919

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How third-party controller compatibility changed over time

The diary does not say what the current state is.

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OK Prostate Chip products related to third-party controller compatibility

The current product list includes USB connector fitting at ¥550 (about $4 at ¥156 = $1, rate as of 2026-09-04) including tax.

Products that appear in these entries

(Source: ok-lab's diary, published August 2019)
https://ok-lab.hatenablog.com/entry/2019/08/24/125858

(Source: ok-lab's diary, published June 2020)
https://ok-lab.hatenablog.com/entry/2020/06/27/120614

(Source: ok-lab's diary, published January 2020)
https://ok-lab.hatenablog.com/entry/2020/01/11/151714

Products the diary mentioned as alternatives

The USB connector fitting option is sold through OK Lab's own online store.

(Source: ok-lab's diary, published November 2019)
https://ok-lab.hatenablog.com/entry/2019/11/30/164020

(Source: ok-lab's diary, published January 2020)
https://ok-lab.hatenablog.com/entry/2020/01/11/151714

The entries also describe custom stiff-cable builds, electrode assemblies, and a modified German controller. No matching product can be confirmed on the current list.

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Common worries about third-party controller compatibility

The replies distinguish connector fitting from confirmation that the customer's complete equipment works.

"Can Time Rotor USB conversion preserve the original vibrating attachment?"

An entry published in January 2020 records this question from a customer concerned about losing the original attachment's function. Mr. Okada said a separately chargeable USB connection for that attachment could preserve its availability.

The diary does not record whether this customer subsequently commissioned the work. Mr. Okada also warned prospective Time Rotor customers about shipping accidents and equipment failure when accepting these jobs.

(Source: ok-lab's diary, published January 2020)
https://ok-lab.hatenablog.com/entry/2020/01/04/155235

"What did USB conversion of another company's cable cost?"

An entry published in January 2020 records a customer's request for USB connections on a supplied controller's cable. OK Lab quoted ¥2,200 (about $14 at ¥156 = $1, rate as of 2026-09-04), plus a ¥400 (about $3 at ¥156 = $1, rate as of 2026-09-04) handling fee.

The entry subsequently reports a vibration test with the supplied controller. Those figures belong to this historical request; the current product table gives the listed USB option's price. OK Lab's reply invited the customer to send the equipment if the quoted charge was acceptable.

(Source: ok-lab's diary, published January 2020)
https://ok-lab.hatenablog.com/entry/2020/01/11/151714

"Could a custom connector match my 2.5mm equipment socket?"

An entry published in August 2024 records a question about a 2.5mm connector for external equipment. Mr. Okada said suitable separate parts had not been available to his workshop, so this was not a standard offering.

He nevertheless offered paid connection work when a customer supplied a commercially available connector. The entry contains no completed result for that request. Mr. Okada invited customers to supply the required part or identify a source for suitable standalone components.

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

"Could custom connectors provide a pair of larger snap buttons?"

An entry published in October 2024 describes a request for a stainless-steel chip with paired larger snap connectors. The supplied buttons measured 4mm, despite the request describing 3.5mm connectors.

OK Lab questioned the fit and explained that the proposed arrangement differed from its usual construction. The customer confirmed the fit, clarified the intended shared electrical connection, and accepted a standard arrangement if necessary.

The entry presents a result, but does not record a functional test with the customer's equipment. OK Lab's reply requested a clear explanation of the intended design before proceeding with the unfamiliar arrangement.

(Source: ok-lab's diary, published October 2024)
https://ok-lab.hatenablog.com/entry/2024/10/26/122649

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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.