Model Casio B640WD
Case Material Stainless Steel
Case Diameter Approximately 39mm
Case Thickness Approximately 10mm
Band Material Stainless Steel
Band Width Approximately 20mm
Display Type Digital
Movement Quartz
Water Resistance 50 meters (165 feet)
Functions Time, Date, Day of the Week, Stopwatch
Backlight Electro-luminescent
Battery Life Approximately 3 years (on CR2016 battery)
Weight Approximately 85 grams