Original Japanese Automatic Dive Watches for Men,Bronze Case with Sapphire Crystal -100M Waterproof Mens Mechanical Wrist Watches with Rotating Bezel & Screw Down Crown

Premium Material -CuSn8 Bronze.CuSn8 refers to tin bronze and is commonly used on high-end watches.It is 20 times harder than regular bronze, and its oxidized color will be more beautiful; This material will show different oxidation effects according to the wearer's different ways of using it. This is also the reason why bronze watches are so popular. Japanese automatic - Miyota 8215 intergrated by 21 jewels. With a power reserve of 42 hours and a movement frequency of 21600 times/hour，which make it not need battery to achieve a long-lasting and stable performance. Genuine Leather Strap - Hand selected high quality cow leather with stainless steel Buckle.The First layer cowhide with water resistant lining is breathable,soft,provides you with a more comfortable wearing experience. Waterproof 100m:Its waterproof depth is 100m. It can be worn in daily life, and can also be used for swimming and diving, but it can not contact hot water and deep diving. The bottom cover is sealed and the crown is spiral, which increases its waterproof performance AFTER SALES GUARANTEE: Buy BODERRY SeaTurtle watches with 100% risk free. 2 Years Warranty for Quality related issues. Customer satisfaction is our first priority we don't compromise on the quality of material. Buy our waterproof wrist watch care-free.