RollsTimi Men's RT-7930 Automatic Watches 40mm Stainless Steel Waterproof Luxury Wrist Watch for Men's

Material: stainless steel construction, Synthetic sapphire dial window(AR Coating), and top Japanese TMI NH35A automatic movement - Case diameter: 40mm/1.57inch - Thickness: 12mm/0.47inch - Band Length: 220mm/8.66inch - Band Width: 20mm/0.79inch - Lug to Lug: 50mm/1.96inch ...Material: stainless steel construction, Synthetic sapphire dial window(AR Coating), and top Japanese TMI NH35A automatic movement - Case diameter: 40mm/1.57inch - Thickness: 12mm/0.47inch - Band Length: 220mm/8.66inch - Band Width: 20mm/0.79inch - Lug to Lug: 50mm/1.96inch - Weight: 147g/0.32lb Premium materials and casual design, Sapphire dial window with AR coating, stainless steel construction with screw-down crown, transparent case back, solid and flexible bracelet with a classic fold-over clasp. Quality Japanese TMI NH35A automatic mechanical movement, very accurate timekeeping, self-winding, and the power of the spring can reserve more than 30 hours. Its architecture, manufacturing, and innovative features make it precise and reliable.

Water-resistant to 100 m (330 ft), In general, suitable for professional marine activity and serious surface water sports, but not scuba diving, The crown would need to be pushed in and then screwed down to protect the watch from water damage.