Hammerhead Heart Rate Monitor 2.0 - Black Fe Sport 200 hours (manufacturer's specification)Protection class

200 hours (manufacturer's specification)Protection class (waterproof): IPX7 certified (to 1 meter depth for 30 minutes)Data transmission via Bluetooth Low EnergyAXS connectivity for easy setup and personalizationCompatible with the RockShox Flight Attendant system

bikepacking and mixed-surface adventure riding in a purpose-built gravel tyre

Features durable 1000 denier

We do not know of another manufacturer who has gone to these levels to ensure a good fit on the legs

single-pivot design

Hammerhead Heart Rate Monitor 2.0 - Black Fe Sport 200 hours (manufacturer's specification)Protection classHit your training goals and get more out of your Karoo with real time heart rate data. A washable chest strap designed for fit and comfort, including conductive rubber electrodes, allows for great connectivity and durability. Ride the Distance 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 keeps you riding and