SUUNTO Smart Heart Rate Belt 2, Waterproof Long Battery Life Comfortable fit, Accurate data, Multiple Sports, ZoneSense Analysis, App

ACCURATE HEART RATE MONITOR: ECG-based chest measurement captures real-time heart rate and high-resolution beat-to-beat R-R data, with new ESD noise protection, so this heart rate monitor for exercise gives a reliable read on how your body responds to every workout COMFORTABLE CHEST STRAP: soft, washable, adjustable heart rate monitor chest strap from 50 g with a compact 13 g transmitter, silicone grip to reduce movement, and improved signal protection for reliable measurement when clothing shifts mid-session. RUNNING FORM PLUS 460-HOUR BATTERY: six-axis IMU measures ground contact time, vertical oscillation, flight time, cadence, and left/right balance with compatible Suunto watches for running, marathon, and road running, and the replaceable CR2032 gives long battery life of up to 460 hours. BUILT-IN MEMORY, 30 M WATER RESISTANT: this chest heart rate monitor stores up to 20 hours of rolling R-R data when Bluetooth drops underwater, then transfers the full swim to your compatible Suunto watch for a complete heart rate and ZoneSense record. WIDE BLUETOOTH COMPATIBILITY: this heart monitor pairs with Suunto watches that support external sensors, plus Bluetooth Low Energy cycling computers and training equipment, holds up to three connections at once, and links direct to Suunto app or Sports Tracker app.