U-Boat Swiss Made Ronda 712.3 Quartz Movement. Lubricated with an Oil Bath. Working between 0°/+60°C when not worn.

44mm x 15mm IP Black 316L Stainless Steel Case Filled with a special Oil which emphasises and improves legibility on the dial. High Quality Domed Red Sapphire Crystal Glass with Anti-Reflection Treatment. Innovative Locking System with Quick Battery Replacement. Screwed In, 316L Stainless Steel case back

Black Dial with White Indexes and Hands.

22mm x 20cm Black Vulcanised Rubber Strap with U-BOAT Logo -  IP Black 316L Stainless Steel Buckle

Water Resistant to 50M 5ATM