Patented Sports Tech Brand: Full IP, Source Code Included
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Platysens is a proven sports technology brand with a real product-market fit, having sold over 3,500 wearable audio coaching devices to swimmers and rowers worldwide. Using bone conduction technology, the products deliver real-time coaching feedback — pace, stroke rate, distance, and navigation — directly to athletes during training, without interrupting their activity or requiring a screen.
Originally developed in Hong Kong with government funding support, the brand was acquired by the current owner in 2021. The business comes fully protected, with registered trademarks in four jurisdictions, a US design patent, and complete source code for all products, offering a buyer a ready-made platform with strong upside in the growing wearables and fitness technology market.
Key Figures
• Units sold: 3,500+ (3,000+ Marlin swim meters, 500+ Marlin X rowing meters)
• Development investment: HK$3-5 million ($385,000-$640,000 USD)
• Recognition: CES Innovation Award 2017
• Trademarks: 4 registered (Hong Kong, EU, UK, China – China transfer in progress)
• Design patent: US D847,008 S (expires April 2034)
• Asking price: $350,000 USD
Products
Marlin Swim Meter
GPS-enabled wearable that clips to swimming goggles and provides audio feedback via bone conduction. Features include real-time pace and stroke rate, distance tracking, open water navigation with waypoints, and integration with Strava and TrainingPeaks. Retail price: $150 ($225 with heart rate sensor). Over 3,000 units sold worldwide.
Marlin X Rowing Meter
Real-time telemetry system for rowers providing stroke rate, blade mechanics, body movement analysis, and crew synchronisation for up to eight athletes. Coaches receive live data via mobile app while rowers hear audio cues through bone conduction. Currently iOS only; Android version source code included (development was approximately 50% complete). Over 500 units sold.
Intellectual Property
Registered Trademarks
• Hong Kong: Registration 304160538 (expires June 2027)
• European Union: Registration 016889297 (expires June 2027)
• United Kingdom: Registration UK00916889297 (expires June 2027)
• China: Registration 26192014 (expires August 2028) – transfer in progress
Design Patent
US Design Patent D847,008 S – "Swimming Performance Monitoring and Analyzing Apparatus" – registered April 2019, expires April 2034.
Source Code
Complete firmware and mobile application source code for Marlin and Marlin X products. Includes in-development Android application for Marlin X.
Manufacturing Assets
• 2,000 pre-programmed voice IC chips (English and Chinese)
• Language audio files available for programming: Japanese, Russian, Spanish
• Chip programmer device for programming additional voice ICs
• Laptop with voice programming software pre-installed
• Established relationship with Telefield (China) – previous manufacturing partner
Sale Includes
• Platysens brand and all associated trademarks
• US design patent
• Complete source code (firmware, iOS apps, in-development Android app)
• Website and domain
• Customer database and email list
• Current stock (Marlin units and accessories)
• Voice IC chips, programmer, laptop, and language files
• Technical documentation and manufacturing specifications
• Introduction to previous manufacturing partner
Growth Opportunities
• Complete Marlin X Android application (source code included)
• Expand into adaptive sports and visually impaired athlete markets
• Pursue rowing federation partnerships for bulk sales
• Develop triathlon-specific product features
• License bone conduction audio technology to complementary products
• Resume active manufacturing using existing component stock
This is a rare opportunity to acquire a proven, IP-protected sports technology brand with inventory, infrastructure, and an existing customer base, ready for the right buyer to take further.
Originally developed in Hong Kong with government funding support, the brand was acquired by the current owner in 2021. The business comes fully protected, with registered trademarks in four jurisdictions, a US design patent, and complete source code for all products, offering a buyer a ready-made platform with strong upside in the growing wearables and fitness technology market.
Key Figures
• Units sold: 3,500+ (3,000+ Marlin swim meters, 500+ Marlin X rowing meters)
• Development investment: HK$3-5 million ($385,000-$640,000 USD)
• Recognition: CES Innovation Award 2017
• Trademarks: 4 registered (Hong Kong, EU, UK, China – China transfer in progress)
• Design patent: US D847,008 S (expires April 2034)
• Asking price: $350,000 USD
Products
Marlin Swim Meter
GPS-enabled wearable that clips to swimming goggles and provides audio feedback via bone conduction. Features include real-time pace and stroke rate, distance tracking, open water navigation with waypoints, and integration with Strava and TrainingPeaks. Retail price: $150 ($225 with heart rate sensor). Over 3,000 units sold worldwide.
Marlin X Rowing Meter
Real-time telemetry system for rowers providing stroke rate, blade mechanics, body movement analysis, and crew synchronisation for up to eight athletes. Coaches receive live data via mobile app while rowers hear audio cues through bone conduction. Currently iOS only; Android version source code included (development was approximately 50% complete). Over 500 units sold.
Intellectual Property
Registered Trademarks
• Hong Kong: Registration 304160538 (expires June 2027)
• European Union: Registration 016889297 (expires June 2027)
• United Kingdom: Registration UK00916889297 (expires June 2027)
• China: Registration 26192014 (expires August 2028) – transfer in progress
Design Patent
US Design Patent D847,008 S – "Swimming Performance Monitoring and Analyzing Apparatus" – registered April 2019, expires April 2034.
Source Code
Complete firmware and mobile application source code for Marlin and Marlin X products. Includes in-development Android application for Marlin X.
Manufacturing Assets
• 2,000 pre-programmed voice IC chips (English and Chinese)
• Language audio files available for programming: Japanese, Russian, Spanish
• Chip programmer device for programming additional voice ICs
• Laptop with voice programming software pre-installed
• Established relationship with Telefield (China) – previous manufacturing partner
Sale Includes
• Platysens brand and all associated trademarks
• US design patent
• Complete source code (firmware, iOS apps, in-development Android app)
• Website and domain
• Customer database and email list
• Current stock (Marlin units and accessories)
• Voice IC chips, programmer, laptop, and language files
• Technical documentation and manufacturing specifications
• Introduction to previous manufacturing partner
Growth Opportunities
• Complete Marlin X Android application (source code included)
• Expand into adaptive sports and visually impaired athlete markets
• Pursue rowing federation partnerships for bulk sales
• Develop triathlon-specific product features
• License bone conduction audio technology to complementary products
• Resume active manufacturing using existing component stock
This is a rare opportunity to acquire a proven, IP-protected sports technology brand with inventory, infrastructure, and an existing customer base, ready for the right buyer to take further.
About the Business
- Years in Operation
- 12
- Facilities & Assets
- Current inventory includes 60 Marlin swim meters and 8 Marlin X rowing meters, plus 100 Marlin Lora units (Chinese-market variant). Manufacturing assets include 2,200 pre-programmed voice IC chips (English and Chinese), a chip programmer, and a laptop with voice programming software pre-installed. Additional language audio files are included for Japanese, Russian, and Spanish, allowing further chips to be programmed for new markets. Full technical documentation and manufacturing specifications are provided, giving a buyer everything needed to continue production without starting from scratch.
- Website
- https://www.platysens.com/
- Market Outlook / Competition
- The wearable swim tech market includes Garmin and FORM Smart Swim Goggles, which use screens or watch displays to show post-swim or real-time data. Bone conduction audio brands like Shokz, FINIS, and H2O Audio focus on entertainment, playing music or coaching feedback. Platysens occupies a distinct niche: it is the only device generating live, structured coaching cues (pace, stroke rate, navigation) through bone conduction during the swim itself, rather than music playback or post-session screen-based data. The concept of enabling a swimming coach to send real-time instructions back to the swimmer has also been costed out by a New Zealand company, reflecting broader interest in two-way audio coaching in aquatic environments. This hands-free, screen-free coaching approach has no direct equivalent among current competitors, positioning Platysens as a genuine first-mover in audio-based real-time coaching for swimmers and rowers.
- Opportunities for Growth
- Several clear paths exist to grow the business beyond its current position. Completing the Marlin X Android application, with source code already roughly 50% developed, would open the product to a much wider customer base. The adaptive sports market, particularly visually impaired swimmers, represents an underserved segment well suited to audio-based coaching. Targeting rowing federations and clubs directly could drive bulk Marlin X sales, while developing triathlon-specific features would extend the product range into a related, high-engagement sport. The bone conduction technology itself could also be licensed to complementary products beyond swimming and rowing. Finally, with an established manufacturing relationship in China and existing component stock already on hand, resuming active production requires considerably less groundwork than starting from scratch.
About the Sale
- Seller Motivation
- Brand preserved; focus and investment now needed are beyond current scope.
- Transition Support
- The seller will provide a full handover to ensure a smooth transition. This includes introductions to the former company director and the app developer, who can offer technical and operational insight into the products and source code. The buyer will also receive access to existing digital infrastructure, including AWS for app server hosting, Google Workspace for email, and the Apple App Store account for iOS distribution. Guidance will be provided on migrating the WooCommerce website from its current GoDaddy VPS hosting to the buyer's own platform. The seller is also able to introduce the buyer to the previous manufacturing partner, Telefield (China), to support sourcing and production going forward. The level and duration of support can be discussed and agreed directly with the seller.
Listing Info
- ID
- 2517394
- Listing Views
- 1
Attached DocumentsAttachment Disclaimer
Listing ID: 2517394 The information on this listing has been provided by either the seller or a business broker representing the seller. BizQuest has no interest or stake in the sale of this business and has not verified any of the information and assumes no responsibility for its accuracy, veracity, or completeness. See our full Terms of Use. Learn how to avoid scams.
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