Suunto GPS Track POD LEFTnotruc(Records track, speed, distance and GPS altitude,500) Highly responsive speed readings using Suunto FusedSpeed Real-time speed and distance for selected Suunto sports watches: Quest, M5, t3d, t4d, t6d Rechargeable, lithium-ion battery (battery life: 15h / 1s GPS fix, 50h / 60s GPS fix) Water resistant to 30 meter/100 feet ISO 22810