Garmin HRM-600 Size: M - XL 735XT while sodium and potassium help

while sodium and potassium help replace electrolytes lost through sweat

and electrolytes

menstruation

up to 31 hours in GPS mode

Garmin HRM-600 Size: M - XL 735XT while sodium and potassium helpThe HRM 600 premium heart rate monitor is built for data driven performance athletes looking for accurate heart rate and HRV data plus running dynamics. M XL: Strap length: 72106 cm (28"42") Fits chest size 80119 cm (31. 547) SENDS REAL TIME HEART RATE AND HRV DATA TO COMPATIBLE DEVICES AND APPS UP TO 2 MONTHS OF BATTERY LIFE WITH A RECHARGEABLE BATTERY RUNNING DYNAMICS WHEN PAIRED WITH YOUR COMPATIBLE SMARTWATCH RECORD ACTIVITIES AND SYNC TO THE