Sport Running Watch Function: Heart Rate mode, Pedometer mode, Time/Date setting, Step Memory Storage mode, Stopwatch, Countdown Timer, Alarm, EL Backlight.
Protective ABS Plastic Crystal Dial Window, Flexible PU Band, Fasion and Comfortable.
Specs:Dial diameter 49mm, Dial Thickness 14mm,fits wrist size 170mm--225mm.
Water-resistance to 5 ATM.Various colors for better choice.
Note that you need to put it on your wrist to take heart rate.

Technical Details

Size (LWH): 3.1 inches, 3.1 inches, 2.9 inches
Product Details
Product Dimensions: 3.1 x 3.1 x 2.9 inches
Shipping Weight: 0.25 pounds (View shipping rates and policies)
ASIN : B00Y4MOOI4