The COOSPO BK9C is built for riders who want reliable cadence tracking without paying premium-brand prices. It mounts easily to the crank arm with no magnets or complicated setup. A motion algorithm helps keep cadence data stable and consistent across different terrain and conditions.

With Bluetooth 5.0 and ANT+, the BK9C works with a wide range of platforms: bike computers from Garmin, Wahoo, Hammerhead, Sigma, Mio and more, plus GPS watches and indoor equipment. App support includes Zwift, Wahoo Fitness, CoospoRide, Strava and TrainerRoad.

Highlights

• Real-time cadence tracking without magnets

• Bluetooth 5.0 + ANT+ connectivity

• Compatible with Garmin / Wahoo / Hammerhead / Sigma / Mio and more

• Up to 300 hours on replaceable CR2032 battery

• IP67 water resistance + status LED

Specifications

• Size: 30.48 × 33.02 × 7.62 mm

• Weight: 8.4 g

• Battery: CR2032 (replaceable), up to 300 hours

• Connectivity: Bluetooth 5.0 & ANT+

• Waterproof rating: IP67

• Temperature range: -10°C ~ 50°C

In the box

• COOSPO BK9C cadence sensor

• Silicone protective case

• User manual