TECHNOS GMT Since its release, the highly popular GMT, a full-fledged diver's type with 20 ATM water resistance. It has a screw-down crown and screw-back case for excellent water resistance. Movement: Swiss RONDA quartz Case size: Diameter 42mm, Case thickness 12mm, Case material: Stainless steel Back cover material: Stainless steel, Windshield: Mineral glass, Belt material: Stainless steel, Lug width (belt width): 17mm Weight: Approximately 174g, Water resistance: Reinforced water resistance for daily life (20 ATM) Features ☆ Other features: unidirectional rotating bezel, screw-down crown, screw-back Luminous indexes Watch body only ♪ Currently running Battery life is unknown.