DetailCase material : GlassCase Diameter(cm) : 3.4cmCase thickness(cm) : 1.5cmBand color : Show as pictureBand length(cm) : 21.5cmBand width(cm) : 1.6cmMain Features1. 100% Brand new with high quality2. Display time with digital numbers 3. Display the hour， minute， second and date4. Special design with the chronograph (stopwatch) at 0.01 second increment5. Alarm function.6. Additional back light function to display the time clearly in darkness7. The waterproof depth is up to 30M Component Included: Sport Wrist Watch x 1User Manual x 1