Hammerhead C1 Heart Rate Sensor 2.0

Achieve your training goals now and get more out of your Karoo bike computer with real-time heart rate data. The washable chest strap with conductive rubber electrodes ensures an optimal fit and comfort and offers excellent connectivity and durability.

Features of the Hammerhead C1 Heart Rate Sensor 2.0

• Adjustable, washable, elastic strap
• Strap length: 28" - 48" | 711 mm - 1219 mm
• Weight: 15 grams (pod) | 28 grams (strap)
• Connection: 2x Bluetooth channels and ANT+
• R-R intervals
• 30 m waterproof
• Material of the electrodes: Rubber
• Battery life: Approx. 900+ hours
• Battery type: Replaceable CR2032 | 3 Volt (included)

Details that matter

The Hammerhead heart rate monitor uses a conductive rubber material that is highly sensitive and can measure heart rate in all conditions. The material has excellent resistance to aging, temperature and oxidation. The construction is flexible and allows for consistent heart rate detection and durability. The electrodes feature a patented honeycomb pattern that increases skin contact area and improves moisture wicking. It also improves the contact of the electrodes with the skin and prevents the strap from moving up and down on the chest during intense exercise.

Master the course

One of the lightest pods and straps on the market at 15 grams and 28 grams respectively. The patented electrodes increase reliability in all conditions, while the exceptional battery life means you can now explore even greater distances and use less battery.

No fear of sweat

Thanks to the waterproof design, you don't have to worry about your sensor being affected by sweat or water while riding. Absorbent and elastic materials ensure that the strap stays on your chest even when you sweat. After the ride, you can simply remove the sensor housing to wash the strap and be ready for the next ride. The Hammerhead heart rate monitor is water and sweat resistant.

Connect and go

Two Bluetooth channels and ANT+ allow pairing with two Bluetooth devices and any number of ANT+ receivers. Connect your Karoo via ANT+ for exceptional battery life on the road or use it with your smartwatch for running and other Bluetooth indoor trainer setups.