The HRM4 Run heart monitor strap gives you access to the most advanced running metrics on your Garmin Forerunner device, including ground contact time, stride length, cadence, vertical oscillation, vertical ratio and ground contact time balance. The small, lightweight module fits within the width of the comfortable, seamless strap while providing you with the most advanced heart rate features including V02 max, recovery time estimates, performance condition, stress score, lactate threshold and more. This comprehensive range of real time data will help you take your performance to the next level each time you hit the pavement.
Forerunner 620, Forerunner 630, Forerunner 920XT, Forerunner 735XT, fenix 2 (includes special addition model), fenix 3 (includes Sapphire and HR models), fenix Chronos, tactix Bravo, epix, D2 Bravo, VIRB Ultra 30 and VIRB XE.
The HRM4 is waterproof but not designed for swimming. We recommend checking out the HRM-Tri if you’re looking for a heart rate monitor that gives you the same advanced running dynamics plus swimming stats and underwater heart rate readings.
Yes. You can hand wash with mild detergent or dish soap and lay it flat to dry.