Vintage Unisex B640WB-1ADF Digital Wrist Watch

Case Size (LxWxH): 38.9 × 35 × 9.4 mm, Weight: 49 g, Band: Adjustable Clasp, Stainless Steel Band, Case and bezel material: Resin, Water Resistance: 50-meter water resistance, Power Supply: Approx. battery life: 3 years on CR2016, Glass: Resin Glass, Surface treatment: Black ion plated band, Black IP, Stopwatch: 1/100-second stopwatch, Measuring capacity: 00'00''00~59'59''99 (for the first 60 minutes), 1:00'00~23:59'59 (after 60 minutes), Measuring unit: 1/100 second (for the first 60 minutes), 1 second (after 60 minutes)., Timer: Countdown timer, Measuring unit: 1 second, Countdown range: 24 hours, Countdown start time setting range: 1 second to 24 hours (1-second increments, 1-minute increments and 1-hour increments), Other: Auto-repeat, Alarm/hourly time signal: Hourly time signal, Multi-function alarm, Light: LED backlight, Afterglow