Track every heartbeat with a lightweight, ultra-stable heart-rate monitor that stays in sync through every workout.
Feather-light design at just 10.1 mm thick keeps the strap nearly invisible under your shirt, so you can train in running, gym workouts, and cycling without distraction.
Upgraded sweat-resistant fabric straps create a precise, seamless fit between the main unit and chest strap, so you get lasting stability without sweat intrusion.
ECG monitoring powered by a high-performance chip and next-generation algorithm delivers accurate heart-rate data for you even during intense sessions, with an ultra-stable connection.
CR2032 battery lasts up to one year with about an hour of use per day, so you can train longer between replacements.
