Product Details Brand: Richard Mille Model: RM055 Reference: RM055 AM Ti Gender: Men/Unisex Movement: Manual winding Dial numerals: No numerals Water resistance: 50 Clasp type: Folding Case diameter: 42 mm Power reserve: 55 hours Bracelet color: White Dial: Openworked Glass: Sapphire crystal Material Bracelet material: Rubber Clasp material: Titanium Bezel material: Ceramic Case material: Ceramic Functions Hours, minutes and seconds.