This item was received from a family member 1-1.5 years ago. The battery has apparently been removed to prevent battery leakage, so the item's functionality has not been confirmed. Although it is in good condition, it is being sold as junk. Diameter: 44mm Lug width: 20mm Rubber belt A sticker is still attached to the back cover. Please make your own judgment as we will not accept any claims after purchase regarding this item.