GPS running watch with Multisport features.Special Feature:Bluetooth.Water Resistant: Yes.Forerunner Specifications - Operating temperature range : From -20º to 50ºC (from -4º to 122ºF) Estimates heart rate at the wrist so you can run freer on race day.Shock resistant. Battery life : Smartwatch Mode Up to 11 days. GPS mode Up to 14 hours. UltraTrac mode Up to 24 hours without wrist heart rate Provides advanced dynamics for running, cycling and swimming7, including ground contact time balance, stride length, vertical ratio and more (when paired with a Running Dynamics Pod, HRM Run or HRM Tri Monitor, sold separately) Offers VO2 max estimate, lactate threshold (when used with a chest strap heart rate monitor), race predictor and recovery advisor Connected features4: smart notifications, automatic uploads to Garmin Connect, live tracking and more Customize with free watch faces, apps and more from our Connect IQ store