Casio G-Shock GBA-900SM-7A9

Size: 51.3 × 48.9 × 16.6 mm Weight: 61 grams

Structure: resin case, bezel, and band, mineral glass
Protection: Shock Resistance, 200-meter Water Resistance Power: Battery (CR2025, approx. 2-year life)
Features: Step counter, Bluetooth smartphone link, dual time (Home city time swap), stopwatch (23:59’59 max, 1/100-second first 60 minutes, 1-second after 60 minutes, lap/split timing, distance/pace display, auto/manual lap timing auto lap notification, 45-record lap memory), countdown timer (60 minutes, settable in seconds, 5 interval timers, auto-repeat, 5-second countdown auto start, repeat 1-20 times), 5 daily alarms, hourly time signal, dual LED light with 1.5 or 3-second afterglow, full auto-calendar, button tone on/off, 12/24-hour format, hand shift, airplane mode