OLEVS Automatic Self-Winding Men's Watch with Date & Day Calendar, Stainless Steel Skeleton Tourbillon Watch - No Battery Needed, Waterproof for Swimming & Diving, Perfect for Business, Formal & Casual Wear

Features

♔Automatic Mechanical Watches: Self winding watches to provide the accurate time. The vibration frequency of 21600 per hour guarantees the punctuality of time, the energy reserve of 45 hours, and the service life of more than 10 years.

♔Power is generated automatically by the movement of your arm. No battery required anymore. Watch should be worn for 8~12 hours everyday to have a full power reserve. Otherwise it will be inaccuracy. Please turn the crown clockwise 30-40 full turns when power is insufficient or the first use(The crown does not need to be pulled out)

♔Mirror Diameter 1.6 Inches (41MM), Round Metal Case Thickness 0.49 Inches (12.5MM), Stainless Steel Bracelet Length: 8.66Inches(220MM), Width: 0.78 Inches(20MM), Weight 5.18 Ounces (147G), Water Resistant To 330 Ft(30m) In General, Suitable For Swimming And Snorkeling, But Not Scuba Diving (if the bracelet is too short, you can contact customer service to request an extended watch section for free)

♔Butterfly Buckle And Safety Closure, Screw-Down Crown,Watch Suitable For: Adult, Father, Brother, Boyfriend, Husband, Student, Man. Suitable For Outdoor And Indoor Sports Such As Running, Climbing, School Season, Christmas, Valentine's Day, Wedding, Birthday, Father's Day, Birthday Party, Weddings, Business Events, As Well As Gifts

♔Automatic Mens Wrist Watches,High Hardness Coated Glass Mirror surface prevents scratches and breaks.Mechanical Movement No battery required,Skeleton tourbillon design, Roman numeral scale is easy to read,Two Tone Stainless steel bracelet (adjustable,With tools),The quality of the watch is stable and With warranty，If you have any questions, please contact us