Timex Deepwater Reef 200 GMT is a 41 mm dive-style GMT watch built for underwater use. It pairs a sapphire crystal and 200 m water resistance with a clear GMT function for travel and diving needs. Key attributes: Blue | Black | Stainless steel | 200 m water resistance | Sapphire crystal | Quartz movement | GMT function | Day-date calendar | Luminous hands | Pin buckle closure | Black dial | Blue silicone strap | Unidirectional bezel | Screw-down crown | Dimensions & fit: Case diameter: 41 Millimeter | Case height: 12 Millimeter | Strap width: 21 Millimeter | Composition & care: Case: Stainless steel | Crystal: Sapphire glass | Strap: Silicone | Bezel: Stainless steel | Movement: Quartz | Rinse with fresh water after saltwater exposure. Wipe with a soft cloth. Do not operate the crown underwater. Have battery and seals serviced by an authorised technician.