I bought this yesterday and wore it once, but unfortunately, it's too big for my wrist, so I've decided to sell it. I sincerely apologize to the person who sold me this item. The product is very substantial and of good quality. Below is the product description, quoted from the purchase details: Movement: NH34 Crown: Screw-down First pull: Manual winding Second pull: GMT hand adjustment Third pull: Time and date adjustment Case material: 316L stainless steel Band material: 904L stainless steel Bezel material: Ceramic Case width: 40mm (excluding crown) Case thickness: 13mm Insert size: 38mm x 30.6mm Band width: 20mm Dial: 29mm Crystal material: Sapphire glass Water resistance: Daily life waterproof I had the watchmaker check the screws on the band today, and I believe you will be able to enjoy it for a long time. I will be listing it for a short period, so please consider it!