TEKMAGIC 10 ATM Digital Swim Watch Scuba Dive Watch with with Stainless Steel Strap, Chronograph, Timer Countdown, Alarm, Calendar, Stopwatch, and Dual Time Zone Display Functions Zeagle back illuminated CMOS image sensor

back illuminated CMOS image sensor

The battery is not included

such as electrode aging can not be used

water temperature changes

TEKMAGIC 10 ATM Digital Swim Watch Scuba Dive Watch with with Stainless Steel Strap, Chronograph, Timer Countdown, Alarm, Calendar, Stopwatch, and Dual Time Zone Display Functions Zeagle back illuminated CMOS image sensorBrand: TEKMAGIC Color: Black Features: The waterproof level of this watch has reached 10 ATM waterproof, which can work normally at a depth of 100 meters (330ft) underwater. It is not only suitable for wearing in water activities such as swimming, diving, snorkeling, surfing, rowing, water skiing, but also suitable for wearing in daily life and outdoor sports, such as jogging, hiking, climbing, cycling, etc. The built in stopwatch and timer function