General Brand Name - Casio Model - B640WD-1A Model Name - Casio Vintage Series Gender - Unisex Age Group - Teen or Adult Country of Manufacture - China Inclusions - Tags, Instruction Manual, Gift Box Sizing and Dimensions Case Diameter - 38.9×35mm Case Thickness - 9.4 mm Band Width - 18mm Wrist Sizing - 15-20.5cm Weight - 49g Sizing - Small Features Digital Module 3294 Movement 50m Water Resistance (Suitble for shallow swimming. Avoid hot showers) Black Digital Dial Resin Dial Window Shiny Silver Resin Case Brushed Silver Stainless Steel Strap with Sliding Clasp Illumination - LED backlight with Afterglow Stopwatch - 1/100-second Alarm - Multifunction alarm with hourly time signal Countdown timer - Measuring unit: 1 second Flash Alert Feature - Flashes with buzzer that sounds for alarms, hourly time signal 12/24 Hour Display Battery Life - Approx 3 Years From New