The Polar Pacer GPS Running Watch is an essential every runner needs. The Polar Pacer is an ultra-light, new-generation GPS running watch streamlined for a liberated, effortless running experience and maximum comfort. Made with tons of tech built in that goes as far as you do from recording your pace,distance and time to more complex features including a hyperfast, high-performance core processor. An MIP (memory-in-pixel) reflective colour display is optimised for bright conditions that adapts to your surroundings . Advanced optical heart rate tracking technology. Accurate GPS and long-life battery with up to 7 days battery life on a single charge. Ergonomic super grip buttons surround a non touch display making the watch easy to use. The new antenna design allows you to track every stride with improved accuracy wherever you run. MIP offers up to 10x more power-efficiency. Sleep Plus Stages automatically tracks the amount and quality of your sleep and shows how long you spent in each sleep stage.