CITIZEN Citizen Unused World Time Chronograph Men's Watch Eco-Drive Storage Box This is a Citizen "Citizen Collection Eco-Drive Radio-Controlled Chronograph" watch. The model number for this watch is CB5870-91L, and the caliber (movement) number is E660. Eco-Drive: Citizen's unique light-powered technology that converts sunlight and even faint indoor light into electricity to power the watch. Regular battery replacement is not required. Radio-Controlled Watch: Receives standard radio waves from four areas around the world: Japan, China, America, and Europe, and automatically corrects the time and calendar, always keeping accurate time. World Time Function: Equipped with a world time function that displays the time difference of the world, convenient for overseas business trips, etc. Chronograph: A high-function model with a stopwatch function. Perpetual Calendar: Equipped with an automatic calendar function that eliminates the need for complex calendar adjustments. Dial Color: Black Belt Color: Silver Accessories: Box, Warranty Operation: Good ★Follow-up discount available! Please let me know in the comments (*^▽^*) Thank you for viewing! To ensure that everyone can purchase with peace of mind, we accept returns(^^) Please check my profile for details✨ Qualifications/Licenses Aichi Prefectural Public Safety Commission Used Goods Dealer License No. 541412205500 ⭐️Full Refund Guarantee⭐️ In the unlikely event that the item is a counterfeit or there is a defect not mentioned in the description, we will provide a full refund. Please contact us before you rate the item. List of advantageous brands ✨✨✨✨✨✨✨✨✨✨ #Click here for a list of Griffey's products ✨✨✨✨✨✨✨✨✨✨ ⭐️Purchase Source We have been given this item from a licensed brand goods buyer and seller authorized by the Hyogo Prefectural Public Safety Commission. It is a genuine product that has been authenticated, so please rest assured. If, by any chance, it is not a genuine product, we will accept returns. Management Number: EFA9495