Offers advanced running and multisport features in a comfortable watch you can wear all day, and it only weighs 49 grams Provides elevation changes with a built-in barometer; altimeter and electronic compass help you keep your bearings Evaluates your training status to indicate if you’re undertraining or overdoing it and offers additional performance monitoring features Provides advanced dynamics for running, cycling and swimming, including ground contact time balance, stride length and more Battery life: up to 2 weeks in watch mode, up to 24 hours in GPS mode, up to 50 hours in UltraTrac mode (with wrist-based heart rate), or up to 60 hours in UltraTrac mode (without wrist-based heart rate) Forerunner 935 GPS running/triathlon watch features a lightweight, comfortable design you’ll be happy to wear all day. The 935 is compatible with our line of easy-to-swap QuickFit Bands With a band to suit every event, you can easily change from sporty silicone to classic leather and even high-end metal. Just how effective is your current training plan? Forerunner 935 will help you monitor your training and recovery so you can better prepare for a race or training cycle. Training Status is a new performance monitoring tool that automatically evaluates your recent exercise history and performance indicators to let you know if you’re training productively, peaking or overreaching. The new anaerobic training effect metric opens a window of insight to a critical dimension of training, telling you how your training is improving your ability to push the limits. You can even view your overall training effect, which measures your exercise volume from the last 7 days and compares it to the optimal range for your fitness and recent training history. Outlast your longest workout with a battery you can rely on, even in the middle of an iron-distance triathlon or ultramarathon. Forerunner 935 features up to 24 hours of battery life in GPS mode and up to 50 hours in UltraTrac battery saver mode. When you’re just using it as your day-to-day smartwatch, you’ll get up to 2 weeks from a single charge.