Case Diameter. 40mm luminous hands (need to absorb light energy storage)the Mechanical Watch boast its special design,and magnified date window at 3 o'clock 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. Simple but luxury design, amazing gift for family, friends, best choice for holiday gifts, Christmas gifts, birthday gifts, parties, New Year's gift, Thanksgiving, Valentine's Day gift and graduation present Waterproof watch:Water resistant to 30 m (99 ft): In general, withstands splashes or brief immersion in water, but not suitable for swimming.
