PAPAGO! GoWatch 770 GPS Multi-Sports Waterproof Watch with ANT GoHeart 100 Heart Rate Monitor Combo, Yellew color belt, 3 axis accelerometer, 18 Hour Recording Time, IPX6/IPX7 Waterproof, Auto Lap, Auto Pause, Virtual Trainer, Alternate Training, Calories Calculation, Customized Page View, Heartbeat Detection Range 30 to 240 BPM, More than 300 hours of Transmission Time after Full Charge, 5 meters Sensor Range, 3.0 CR2032 Lithium battery.