Key Features:

-10 ATM water resistant, support up to 100 meters (328feet) underwater operation.

-Support stopwatch function.

-Support countdown timer function.

-Support alarm clock function.

-Support hourly chime function.

-Support dual time zone display.

-12/24 hour format selectable.

-Support month, date, week day check.

-Negative electro luminescent backlight built-in.

-Support shock resistant.

Parameters:

-Time Accuracy:±30 seconds per month

-Dive Maximum Operating Depth:100M (10ATM)

-Countdown Range:23:59'59'' to 0:0'0''

-Watch Shape:Square

-Watch Movement:Digital

-Battery Code:CR2025

-Operating Battery Life Time:1.5 to 2 years

-Watch Dial Window Material:High Transparency Resin

-Watch Case Material:ABS

-Watch Dial Color:Black

-Watch Case Size:36x36mm

-Watch Case Thickness:10mm

-Watch Strap Material:SUS Stainless Steel

-Watch Strap Color: Black

-Watch Strap Clasp:Turtle buckle

-Watch Strap Width:20mm

-Wrist Circumference in Max:243mm

Note: The battery can be replaced. If you find that the watch is not working or the text on the display is not clear, please replace the watch battery in time.