Soleus Pulse Heart Rate Monitor Watch with Opti-Pulse wrist based HRM distance speed/pace calories burned step counter Heart rate monitor; optical sensor (wrist based); HRM zones; 3D accelerometer Distance; pace; step counter; daily step target 6 interval timers; calories burned; 1/100 sec chronograph; 30 run x 100 lap data storage 5 alarms; EL backlight; rechargeable battery Water resistant to 99 feet (30 M): withstands rain and splashes of water, but not showering or submersion