Swim anywhere, train everywhere with Garmin Swim 2, the GPS swimming smartwatchThe essential feature in the Swim 2 is that it provides an accurate, underwater wrist-based heart rate for swimmers without the need for a chest strapSwim 2 now covers even more swim features such as Auto Rest, Critical Swim Speed (CSS), Turn-Based Pacing Alerts and Drill LoggingSwim 2 will track heart rate, distance, pace, stroke rate, distance per stroke, and GPS track during open water swimsPool swimmers can view heart rate, number of lengths or distance, pace, number of strokes per length, SWOLF score, stroke type, and rest timersAll-Day Stress Tracking and Advanced Sleep Monitoring, help swimmers track and manage their overall health by providing crucial insight that can be used to maximize trainingIncludes activity profiles for outside of the pool including basic cardio, cycling, and run activitiesWith Garmin?s reliable GPS, swimmers will know how far and fast they have swum on their longest open water swimsFully connected by Bluetooth, smart notifications and automatic uploads are availableSlim and lightweight with an always-on, full-colour Garmin Chroma Display that is easy to read?even in direct sunlightBattery life: Pool + Optical Heart Rate: 3 days, GPS + OHR: 13 hours, Smartwatch: 7 days