COOSPO BK9S Speed Sensor Bicycle Sensor: ANT+ & Bluetooth 5.0 wireless connectivity
Imagine a tiny, unassuming gadget that turns your bike into a data powerhouse. That's the COOSPO BK9S Speed Sensor in a nutshell. This little marvel dishes out pinpoint-accurate speed metrics, thanks to its dual ANT+ and Bluetooth 5.0 wireless tech, playing nice with almost any cycle computer or smartphone out there. Rain or shine, it's got your back, boasting an IP67 waterproof rating that laughs in the face of harsh weather.
What's more impressive? Its battery life. A staggering 300 hours means you'll spend more time cycling and less time playing the replacement game. Whether you're chasing Tour de France dreams or just out for a weekend spin, the BK9S is your road bike's new best friend. It's light, it's sleek, and it won't clutter your ride. Installation? A breeze. Performance? Reliable as the sunrise. In the world of cycling tech, this sensor is a quiet overachiever.
- IP67 waterproof rating
- 300 hours battery life
- Compatible with road bikes
- Cycle computer sensor
- ANT+ & Bluetooth 5.0 wireless connectivity
General specs
- Brand: COOSPO
- Model: BK9S
- Seller: Joom
- Connectivity: ANT+, Bluetooth 5.0
- Waterproof Rating: IP67
- Battery Life: 300 hours
- Compatibility: Road bikes
If you are interested in more details, you can find full information on the seller's page.
View on seller's site
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$62.03
Last price update: 8/13/25
Available to order
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Delivery to 
United States
United States
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Comparison with similar products
| This item | Recommendations | |||||
|---|---|---|---|---|---|---|
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COOSPO BK9 ANT+ & Bluetooth 5.0 wireless
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Cadence Speed Sensor ANT+ Bluetooth 4.0 Compatible
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Cycling Speed/Cadence Sensor Wireless Bluetooth/Ant+ connectivity
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Smart GPS Bike Computer GPS tracking
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| Brand | COOSPO | COOSPO | COOSPO | Magene | Magene | Optimized General |
| Model | BK9S | BK9 | ||||
| Color | ||||||
| Rating |
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| Price | $62.03 | $87.14 | $58.79 | $26.99 | $25.00 | $145.80 |
| Seller | Joom | Joom | Joom | Gshopper | Gshopper | Joom |
| Update | August 10, 2025 | August 10, 2025 | August 10, 2025 | July 25, 2024 | July 25, 2024 | August 8, 2025 |
| Connectivity | ANT+, Bluetooth 5.0 | ANT+, Bluetooth 5.0 | Bluetooth, ANT+ | Bluetooth, Ant+ | Bluetooth 4.0, ANT+ | |
| Waterproof Rating | IP67 | IP67 | IPX6 | |||
| Compatibility | Road bikes | Road bikes | ANT+, Bluetooth 4.0 | Road bikes, Spinning bikes, Trainers | ||
Speed Sensor Bicycle Sensor
$62.03
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