GRB200-1A new arrival Countdown start time setting range:

Countdown start time setting range: 1 second to 24 hours (1-minute increments and 1-hour increments)

1/100 second (for the first 60 minutes)

heart rate) use

Warranty: 5 Year

GRB200-1A new arrival Countdown start time setting range:Resin Band Carbon Core Guard Structure Shock Resistant Vibration Resistant Mineral Glass 200 meter water resistance Double LED light LED light for the face (Auto LED light, Super illuminator, selectable illumination duration (1. 5 seconds or 3 seconds), afterglow) LED backlight for the digital display (Auto LED light, Super illuminator, selectable illumination duration (1. 5 seconds or 3 seconds), afterglow) Mobile link (Wireless linking using