・◆IMPORTED MOVEMENT◆----- Quality 21 jewels automatic self-wind movement ; functions without a battery; powers automatically with the movement of your arm. ・◆FEATURES◆-----Screw-down crown; unidirectional rotatable bezel(set second time zone or as a timer), and magnified date window at 3 o'clock; exhibition caseback. ★Medium Size★ : 40mm case diameter. ・◆SCRATCH RESISTANT◆ ----- Synthetic sapphire crystal,adjustable solid stainless steel triple-row link bracelet, 316l surgical grade steel case. ・◆LUMINOUS FUNCTION◆----- This watch's pointers and time marks have a luminous effect (can absorb enough light from sunshine and lights) and excellent visibility, so the time can be displayed clearly in darkness. ・◆WATER RESISTANT TO 200 m (660 ft) ◆----- In general, suitable for professional marine activity and serious surface water sports, but not diving and pull the crown out in order to set the time.