Size: 51-18

meaning it has a water resistance of 1m for 30 minutes

it’s rated to 300 metres water resistance and includes a screw-down crown

and simple hands with indexes

this watch is built for men who thrive on innovation

U-Boat Men's Watch Darkmoon 40 Red Glass Black PVD Brown (strap) Size: 51-18Swiss Precision Ronda 762 Quartz Movement Lubricated With Oil Bath. 40mm x 15mm Black PVD Case Filled with a special Oil which emphasises and improves legibility on the dial. High Quality Curved Sapphire With Special Red Colour Treatment. Blackl Dial With The Dial Features A Visible Air Bubble On The Dial To Compensate For The Temperature Variations Easy To Read Dial Features Beige Luminova Numbers, Hands And Indexes 22mm x 20cm Black Vulcanised