Make sure this fits by entering your model number.
Polar Pacer gives modern runners all the essentials, plus a few extras they need to do one thing: RUN. Time, pace, distance, laps, stopwatch, incredibly accurate GPS, precise heart rate tracking, plus the specialized training, sleep and recovery tools.
Enhanced Processor: for faster, smoother, more powerful performance and screen transitions. Rapid charging and data transfer. Up to 35 hours of training time with full GPS and HR tracking on (up to 100 hours in power-save modes).