Case - Steel Diver - 41mm - Fixed bezel - NH34A robust case with brushed surfaces and a see through case back with a fixedl GMT bezel. A screw down crown, sapphire crystal and screw in case back protect your watch movement against dirt and water. The case is available with a see through or solid steel case back and fits the NH 34 GMT movement or any similar sized ones (e. g., NH35 38) and our 28. 5mm dials. Please note that our cases are available with and without cut stems. If you order the cut