ref. 1088 Movement: mechanical hand-winding Engine: caliber U-28, up to 40 hours power reserve Features: hours, minutes Case: 50mm 316L stainless steel Bezel: fixed stainless steel Crown: push-down stainless steel crown at 9 o'clock Case back: transparent exhibition Crystal: sapphire crystal Dial: black, made up of two superimposed dials: one treated with SuperLuminova and orange colored pigments and the other one cut, treated with composed opaque black pigments Band: U-Boat black leather Buckle: U-Boat stainless steel tang buckle U-Boat inner/outer box set& manual Condition details: This watch is new-display item and therefore you may find some minor imperfections. It has never been worn.Please see pictures for details. The watch will be exactly as on pictures. Let me know if you have any questions.