Fenix 3 hr features garmin39s own elevate wrist heart rate technology perfromer bundle includes additional hrm strap fenix 3 is the uncompromising gps sport watch designed for demanding athletes and outdoor adventurers fenix 3 is powered by advanced sensors gpsglonass positioning via the new steel exo antenna and a brilliant colour chroma display it comes packed with multi sport training functions such as running dynamics vo2 max estimation and swim metrics new trail running featu