Men's Automatic Watch, Steel Strap, Unique Case Design

Japanese automatic movement with analog display
The watch is powered by the motion of the wearer's wrist. If the watch is not worn for 8 or more active hours per day, it will run slower than usual or even stop briefly.
Living waterproof design (Not suitable for swimming, diving, shower, etc.)
Glass Back Case can see How it Works
GuTe-picked Vintage Style Mechanical Wristwatch for Men/ Teenage boy