G-Shock G-Steel Mens 200m Bluetooth Solar - GST-B400BB-1

World time
38 time zones (38 cities + coordinated universal time), city code display, city name display, daylight saving on/off, auto summer time (DST) switching, Home city/World time city 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/split time
Timer
Countdown timer
Measuring unit: 1 second
Countdown range: 60 minutes
Countdown start time setting range: 1 second to 60 minutes (1-second increments and 1-minute increments)
Alarm/hourly time signal
5 daily alarms
Hourly time signal
Double LED light
LED light for the face (Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow)
LED backlight for the digital display (Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow)
LED:White
Calendar
Full auto-calendar (to year 2099)
Mute feature
Button operation tone on/off
Energy saving feature
Power Saving (display goes blank to save power when the watch is left in the dark)
Battery display/alert
Battery level indicator
Approx. battery operating time:
7 months on rechargeable battery (operation period with normal use without exposure to light after charge)
18 months on rechargeable battery (operation period when stored in total darkness with the power save function on after full charge)
Accuracy: ±15 seconds per month (with no mobile link function)
12/24-hour format
Date/month display swapping
Day display (days of the week selectable in six languages)
Hand shift feature (Hands move out of the way to provide an unobstructed view of digital display contents.)
Regular timekeeping:
Analog: 2 hands (hour, minute (hand moves every 20 seconds)), 1 dial (battery level, mode)
Digital: Hour, minute, second, pm, month, date, day
Operation Guide
Mineral Glass
Black ion plated case
Neobrite
Mobile link (Wireless linking using Bluetooth®)
Case / bezel material: Resin / Stainless steel
Resin Band
Carbon Core Guard structure
200-meter water resistance
Power supply and battery life
Tough Solar (Solar powered)
Case size (L× W× H)
46.6 × 49.6 × 12.9 mm
Weight
80 gWorld time
38 time zones* (38 cities + coordinated universal time), daylight saving on/off, auto summer time (DST) switching
*May be updated when connected to a smartphone.
Moon data (moon age of the specific data, moon phase)
Sunrise, sunset time display
Sunrise time and sunset time for specific date
1-second stopwatch
Measuring capacity: 99:59'59''
Measuring modes: Elapsed time, split time
Timer
Measuring unit: 1 second
Countdown range: 60 minutes
Countdown start time setting range: 1 second to 60 minutes (1-second increments)
Alarm/hourly time signal
4 daily alarms with snooze
Smart alarm (with snooze)
LED backlight (Super Illuminator)
Full auto LED light, selectable illumination duration (1.5 seconds or 5 seconds), afterglow
LED:White
Calendar
Full auto-calendar (to year 2099)
Mute feature
Button operation tone on/off
Energy saving feature
Power Saving (display goes blank to save power when the watch is left in the dark)
Battery display/alert
Battery level indicator
Using activity functions (heart rate): Approx. 35 hours max. 
Using in watch mode with heart rate measurement OFF: Approx. 1 month
Using with power-saving function ON: Approx. 11 months
* Varies depending on usage environment; from full charge, without solar power.
Accuracy: ±15 seconds per month (with no mobile link function)
Airplane mode
Vibrator
12/24-hour format
Regular timekeeping:
Hour, minute, second, am/pm, month, date, day
Vibration on/off
Sensor feature details
* The blood oxygen level measurement function is not intended as a medical device for diagnosing specific diseases. It is intended for general health maintenance only.
obile link (Automatic connection, wireless linking using Bluetooth®)
App connectivity feature
Auto time adjustment
Easy watch setting
Approximately 300 world time cities
Notification function (incoming calls, incoming e-mails, new social media posts, calendar notifications, reminders)
Training analysis data
Activity history
Life log data
Distance correction by smartphone GPS
Sleep analysis data
Phone finder
Mineral Glass
Case / bezel material: Bio-based resin
Bio-based resin band
200-meter water resistance
Power supply and battery life
Charging system compatible with dedicated cable (requires device with Type-A USB terminal)
Solar powered
Sensor feature
Activities: Multi-sport (running, walking, others); Calculate and display distance, speed, pace, and other information using accelerometer; auto/manual lap function; auto pause function
Training Analysis: Cardio load status
Activity Log Data: Up to 100 runs with up to 200 laps each, measurement time, distance, pace, running index, calories burned, energy source used, heart rate, maximum heart rate, cardio load, pitch, maximum pitch, stride
Wrist Heart Rate Measurement (30～220 bpm): Heart rate, target heart rate setting, graphic heart rate zone indication, heart rate graph, maximum heart rate, minimum heart rate
Sleep Measurement: Sleep recovery status (6 stages), sleep recovery stage display, sleep status (5 stages), sleep score display range (1 to 100, measurement unit: 1), autonomic nerve status (5 stages), ANS score range (-10 to +10, measurement unit: 0.1)
Blood Oxygen Level Measurement*
Breathing Exercise: Setting range (2 to 20 minutes in 1-minute increments), biofeedback, zone-specific time summary
Step Count Measurement: 3-axis acceleration sensor, step count display range (0 to 99999 steps), step count reset: automatic reset at midnight every day
Active Time Measurement: Special algorithm measures movement time using status analysis (walking, running, biking, undefined)
Life Log: Step count, step count graph (week, month, 6 months), calories burned measurement, active time measurement
Step reminder
Case size (L× W× H)
51.1 × 44.5 × 17.4 mm
Weight
59 g