Sports enthusiasts who are serious about tracking their results will find a perfect match for our Yellow Go Watch 770 GPS Multi-Sport Waterproof Watch with the PAPAGO! Go Heart 100 ANT+ Heart Rate Monitor. It has a transmission range of up to 5 meters with a durable strap that is made of lightweight material that is extremely comfortable and non-irritating to the skin. Everyone knows that fitness should be a huge factor in your personal life. Now tracking your time distance calories heart rate and speed can easily be done with a few pushes on a button with this sports watch. The large display is easy to read and navigate and also has a backlight that is activated by two taps on the screen. Upload your stats via our available software at run.goyourlife.com and track your workouts. Beat your own time or compete against friends. With the Go Watch 770 and Go Heart 100 H.R.M. you are sure to reach your goals. Yellow 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.