Jules Audemars Extra Thin in white gold This ultra-thin watch has a classic dial - timeless & elegant Movement: proprietary ultra thin, selfwinding Caliber 2120 with 40 hour power reserve Case in 18K white gold - diameter 41 mm x 6.7 mm with sapphire crystal Dial: silvered with applied pink gold hour markers and pink gold hour and minute hands Strap: hand sewn black crocodile leather with large square scales with 18K white gold tang buckle Functions: Hours and minutes Water resistant to 20 meters / 65 feet.