Product Specifications Driving system Photovoltaic power generation: approx. 1 year Automatic radio wave correction function No Display method Analog Case Stainless steel Duratect dlc （Case Duratect dlc (black color) Glass Sapphire glass (Clarity coating) Band material Stainless steel Duratect dlc （Black color) Cusp: Spring bar type Inside clasp: 3-fold push type Band (Adjustable) Split pipe type Accuracy ±15 seconds/month Naturlite No Direction measuring function Timer No Time alarm No Power saving function Specification 1 Waterproof : 5 atm Specification 2 Thickness: 3.88mm / Width: 38.0mm Specification 3 Caliber: 8826 Sapphire dial Limited to 250 pieces worldwide 1 year manufacturer's warranty (3 years with registration of my citizen Citizen Owner's Club) Basic Information Product name [Limited edition of 250 pieces] Eco-Drive One, Limited edition model AR5064-57L Model number AR506457L Manufacturer citizen Product code 12940869 Manufacturer Release Date 06/13/2024 Manufacturer Warranty 1 year