Description: Name: mechanical watch style: Casual Movement type: fully automatic movement Color: black surface, white surface Waterproof index: 30 meters of life waterproof Strap material: stainless steel Diameter: 43mm Thickness: 14. 5mm Colors: White, Black Package includes: 1*watch Precautions for proper use and maintenance 1. Do not disassemble the watch by yourself under any circumstances. 2. Please avoid staying close to electrical appliances, mobile phones and magnets for a long time, and pay attention to anti-magnetic watches. 3. Clean the watchband and case regularly. If it is a leather watchband, avoid contact with moisture, moisture, cosmetics, etc., and avoid exposure to the sun. About the waterproof performance of the watch 1. Waterproof watches can be roughly divided into three categories, namely, daily life waterproof, enhanced waterproof for daily life, and waterproof coefficient of waterproof watches for diving. It is recommended to use watches with a waterproof depth of 30 meters or more for swimming and other water sports. 2. Generally, waterproof watches should not be used in hot baths, saunas, and environments with large temperature changes. Because the waterproof rubber ring is affected by the temperature, there will be gaps in the thermal expansion and contraction, and accelerate the aging to affect the waterproof function. 3. Keep the crown in its normal position and tighten the spiral crown. Never calibrate the crown in water.