GUANQIN Men Women Couple Lovers Day Date Vintage Wristwatch Analog Japanese MIYOTA Automatic Self-Winding Mechanical Sapphire Crystal Wrist Watch Stainless Steel Luminous Waterproof Business Clock

Japan automatic self-wind movement with 21 synthetic gemstones stable bearings, frequency about 28800 A/H, provides precise time and storage of energy over 42 hours. Powered by natural movements of your wrist; must be worn at least 8 hours a day. If not worn for a long time, the watch will stop automatically and you need to recondition the correct time and wear it. To wind up, whirl the button clockwise for 30 to 40 laps. Features calendar, week, and luminous function. See-through back cover allows observation of movement work. Stainless steel case and band with ergonomic design for comfort. Double-open butterfly buckle made of durable, skin-friendly material. Synthetic sapphire crystal mirror with hardness second only to diamond, resistant to syringes, breaking, high temperature, and corrosion. 50M water resistant suitable for hand washing and rain, but not for swimming, diving, or hot baths. Do not use at extremely hot or cold temperatures; keep away from magnets. Color may vary due to display differences. Package includes: watch, user manual, and gift box.