POLAR Running Watch with Wrist-Based Heart Rate

* Optical Heart Rate - Continuous, accurate heart rate without a chest strap. FlowSync compatible with computer running Mac OS X 10.6 or later and Windows XP, 7, 8, 10 * Integrated GPS - Speed, distance and route tracking * Activity Monitoring - Follow your daily activity and sleep 24/7 * Mobile Connectivity - Seamless communication via Bluetooth Smart to Polar Flow app on mobile devices * Running Program - Free running plan made just for you and your needs. NOTE: Refer start-up guide and user manual before use * Water Resistance: Waterproof (suitable for swimming). Thickness 1.2 centimeters