【Product Specifications】 ・Back Material / Stainless Steel ・Water Resistance / Reinforced Water Resistance for Daily Life (10 ATM) ・Case Size [Length] 52.4mm [Width] 46.3mm [Thickness] 13.6mm (excluding button protrusions) 【Movement Specifications】Caliber S620 ・Time Accuracy / Average monthly difference ±20 seconds (when worn on the wrist at temperatures between 5°C and 35°C) ・Stopwatch Function (1/100 second measurement, 100-hour timer) ・Smart Lap Function (Lap function that works with marathon race measurement mats) ・Marathon Mode (Countdown timer starting 30 minutes before the race start time) ・Lap Memory Function (Up to 300 memories) ・Double Repeat Timer Function ・Alarm Function (Daily alarm 3 channels) ・World Time Function (44 cities) ・Full Auto Calendar Function (Until December 31, 2064) ・LED Light Function (Tap method) ・Battery Life / Approximately 2 years (Power save function) ※The above information was quoted from the Seiko Watch website. ※This product is a dead stock item that was in stock at a closed watch store. ※Based on the serial number, it appears to have been manufactured in November 2015. ※The battery has been replaced by us. ※Watch body only, no box, instruction manual, or warranty card. The instruction manual can be viewed on the Seiko Watch website. Accessories...None Operation...Good Scratches/Cracks...None