Retro-cool design, timeless styling and a distinctive case have defined the Datron Collection for over 50 years. Inspired by our archives, this timepiece features a 40mm case of stainless steel housing a chevron textured green dial fitted with a day window, a date window, and Swiss Super-LumiNova® accents. We’ve added a modern touch with an exquisite Swiss made automatic movement. A fluid three row bracelet in matching stainless steel and effortless push-button deployment clasp complete this essential piece.Automatic watches do not contain batteries. They are charged by the movement of your wrist. If the watch is not worn it will stop running in about 41 hours. To get it started, turn the crown clockwise about 20-30 times until the second hand starts moving. You will most likely need to reset the time and date Technical Details Dial: Green Super-Luminnova® With Index Case Diameter: 40 Case Material: Stainless Steel Crystal Fabrication: Sapphire Water Resistance: 5 ATM Movement: Swiss Automatic Movement Gender: Men's, Women's Strap: Link Bracelet Bracelet: Stainless Steel Link Bracelet