Model Number: GA-100CF Wrist Size: 13-21 cm Case Width: 51 mm Thickness: 15 mm *Please note that there may be slight variations due to amateur measurements. Currently functioning normally without any issues. There are minor scratches and scuffs on the case, but I believe it is in good condition. Please check the photos. All buttons are operational. The backlight also illuminates. I would like to sell this to someone who understands that it is a used item. Thank you.