Casio G-Shock GBA-900UU-3A

Specifications

• Case / bezel material: Resin 
• Resin Band
• Shock Resistant
• Mineral Glass
• Quartz Movement
• Mobile link (Wireless linking using Bluetooth®)
• Lifelog calculation function (Calorie and distance calculations based on step count), Including basal metabolic rate Daily data display: Step count, calorie, distance
• 200-meter water resistance
• Double LED light LED light for the face (Auto LED light, Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow) LED backlight for the digital display (Auto LED light, Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow)
• 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)
  Measuring modes: Elapsed time, split time, 1st-2nd place times
• 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
• Multi-function alarm
• Dual time (Home city time swapping)
• Hourly time signal
• Power Saving
• Low battery alert
• Full auto-calendar (to year 2099)
• 12/24-hour format
• Regular timekeeping: Hour, minute, second, am/pm, month, date, day
• User profile creation
• Accuracy: ±15 seconds per month (with no mobile link function)
• Approx. battery life: 2 years on CR2025

Size of case / Total weight

• Size of case : 51.3 × 48.9 × 16.6mm
• Total weight : 61g