G-SHOCK GMDB300-4

Basic Information Case size (L× W× H) 46.4 × 43.8 × 12 mm Weight 41 g Case and bezel material Resin / Bio-based resin Band Bio-based resin band Construction Shock Resistant Water resistance 200-meter water resistance Time adjustment Bluetooth: Connects to a smartphone and automatically adjusts the time Power supply and battery life Approx. battery life: 2 years on CR2016 Sensor feature Step Count Measurement: Step count display range : 0 to 999,999 steps Step goal progress display (step count goal setting range: 1,000 to 50,000, 1,000-step increments) Step count graph（Hourly step count for the past 7 hours on a 6-level graph） Step indicator Smartphone Link/App Connectivity Features Smartphone Link feature Mobile link (Wireless linking using Bluetooth®) Apps CASIO WATCHES App connectivity feature Auto time adjustment Easy watch setting Approximately 300 world time cities Life log data Stopwatch data transfer App information Time & place Phone finder Exterior Glass Mineral Glass Compatible band size 145 to 190 mm Watch Features World time Dual time (home time swapping) Stopwatch 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, lap time, split time Recorded data: Up to 200 records (measurement start year, month, date, hour, minute, lap/split times) Timer Countdown timer Timer for interval measurement (up to five time settings) Measuring unit: 1 second Input range: 00'00" to 60'00" (1-second increments and 1-minute increments) Others: Auto-repeat (number of repeats settable from 1 to 20), auto start Alarm/hourly time signal 5 daily alarms Hourly time signal Light LED backlight (Super Illuminator) Auto light switch, selectable illumination duration (1.5 seconds or 3 seconds), afterglow Light color LED:White Calendar Full auto-calendar (to year 2099) Mute feature Button operation tone on/off Energy saving feature Power Saving on/off Battery display/alert Low battery alert Accuracy Accuracy: ±15 seconds per month (with no mobile link function) Other features 12/24-hour format Regular timekeeping: Hour, minute, second, pm, year, month, date, day