⌚ Skeleton Automatic Watch: Double-sided hollow carved design fully exposes the movement, giving you a clear view. The rotation of the gear, the balance spring and the balance, each small part provides the vitality of the watch, allowing you to feel the passage of time intuitively. ⌚ Sapphire Crystal: Glareproofed sapphire mirror, has very high light transmission, scratch resistance and refraction, preventing your watch from scratches. White stick hour-markers and hands with luminescent coating, easy to read time in the dark night. ⌚ Stainless Steel Sports Wristwatch: 174g weight. With its steel case, octagonal bezel, openwork dial and integrated bracelet, it overturned the traditional craftsmanship in the industry. Adopted brushed and polished finish on stainless steel case, bezel and band, providing a comfortable wear experience, 42mm case is a nice size for larger hands/wrists. The strap can be adjusted by a slotted screwdriver. ⌚ Seagull Automatic Movement: Battery free, it is powered by the natural movements of your wrist. As you wear it, it will automatically continue to wind more, also supports manually winding, full wind can last 72 hours. When using for the first time, please manually wind up the crown about 20 laps to drive the watch. ⌚ Waterproof&Warranty: Water resistant to 3ATM(30M), suitable for rain, cold bathing, swimming, not for snorkeling, diving, and hot springs. All the watches in our shop enjoy 2 years warranty and 30-day 100% money back guarantee. If you have any questions, welcome to send emails to us, we are always at your service.