BERNY Men's Japanese Automatic Self-Winding Mechanical Watch - 10ATM Waterproof, Sapphire Crystal Scratch Resistant, Super Luminous with Date Display (No Battery Needed) - Perfect for Business, Casual Wear & Outdoor Activities

Self winding Automatic Watch: This men's watch uses Miyota 8215 automatic mechanical movement providing the accurate time, 21-jewel. Timepiece is powered by the natural movement of your arm, no battery needed. It is better to wear it at lease 10 hours a day, if not, you need manually wind it up at a fixed time to get energy for the watch. Please rotate the crown about 20 laps when using the watch for the first time.

Heavy duty: The case of our Berny automatic watch is made of hardened brushed stainless steel up to HV800 surface hardness. The lens is the high hardness of the sapphire glass, excellent scratch resistance. The case back is exhibition sapphire glass.

Soft and durable silicone bracelet: The material of our mechanical watch band is the high quality silicon. Band width - 24mm, length - 205mm, with buckle closure.

Unique features: Blue round dial with analog display date at 3 o'clock. 45mm diameter x 12mm thick. Super luminous hour and minute hands, and markers. Watch weight: 127 grams.

100M waterproof: Watch case are perfectly sealed, improving waterproof performance - water resistant to 100M (10ATM). It is suitable for swimming and diving, but not in hot springs water.