Movement Men Cal.T1 TOURBILLON (frequency: 28800) Case size 43 mm Case thickness 11.5 mm Case material 316L stainless steel Middle case Quartz glass Windshield Sapphire crystal Back cover See-through back (Sapphire crystal) Water resistance 3ATM Weight Approx. 69g Warranty period 24 months Belt Genuine leather Belt fitting width 21mm Tailstock width 18mm Buckle D buckle with perlage treatment Night light Luminova