NIKE Triax C3 Heart Rate Monitor SM0013-081

The NIKE Triax C3 Heart Rate Monitor SM0013-001 features are:ECG Accurate : Provides accurate heart rate data Exercise chronograph : Recalls exercise time for the last exercise session Time display S-shaped design Curves around the wrist for improved comfort and read Anatomically designed chest transmitter Nike simplified logic : Easy operation with two button use Water resistant to 30 meters Face Diameter : 41mm (1.6"") Face Depth : 16mm (0.6"") Includes chest strap and software