Casio G-Shock GPR-B1000-1B Digital

Specifications
Case / bezel material: Resin / Stainless steel
Carbon fiber insert Resin Band
Mud Resistant
Shock Resistant
Sapphire Glass with non-reflective coating
200-meter water resistance
LED backlight (Super illuminator)
Auto light switch, selectable illumination duration (1.5 seconds or 3 seconds), afterglow
Solar powered
Power Source
Solar powered system (solar-charging system), charging system compatible with wireless chargers (requires device with Type-A USB terminal)
Low-temperature resistant (–20°C/–4°F)
* Low-temperature resistance guarantees operation of the watch display only. It does not apply to operation of GPS, sensors or other functions.
GPS signal reception: Auto receive (time information, once/day); Manual receive (position information, time information)
GPS Navigation
Activity logs (up to 20 logs), track display (wide area map/magnified map switching), start-to-destination direct distance, bearing to destination, destination setting from Point Memory recordings, backtrack, activity time measurement, log use status
Mobile link (Wireless linking using Bluetooth®)
Point Memory
Up to 60 sets of point data (time, date, longitude/latitude, altitude, atmospheric pressure, temperature), point icons
Digital compass
Measures and displays direction as one of 16 points
Measuring range: 0 to 359°
Measuring unit: 1°
60 seconds continuous measurement
Bidirectional calibration and magnetic declination correction
Bearing memory (records and display one set of degree and direction)
Graphical display of north
Auto horizontal compensation
Altimeter
Measuring range: –700 to 10,000 m (–2,300 to 32,800 ft.)
Measuring unit: 1 m (5 ft.)
*Changeover between meters (m) and feet (ft)
Barometer
Display range: 260 to 1,100 hPa (7.65 to 32.45 inHg)
Display unit: 1 hPa (0.05 inHg)
Atmospheric pressure tendency graph
Barometric pressure tendency information alarm (beep and arrow indicates significant changes in pressure)
*Changeover between hPa and inHg
Thermometer
Display range: –10 to 60°C (14 to 140°F)
Display unit: 0.1°C (0.2°F)
*Changeover between Celsius (°C) and Fahrenheit (°F)
Airplane mode
World time
39 time zones* (39 cities + coordinated universal time), daylight saving on/off, auto summer time (DST) switching
*May be updated when connected to a smartphone.
Sunrise, sunset time display
Sunrise time and sunset time for specific date
1-second stopwatch
Measuring capacity: 999:59'59
Measuring modes: Elapsed time, split time
Countdown timer
Measuring unit: 1 second
Countdown range: 24 hours
Countdown start time setting range: 1 minute to 24 hours (1-minute increments)
4 daily alarms
Battery level indicator
Power Saving (Display goes blank to save power when the watch is left in the dark.)
Full auto-calendar (to year 2099)
12/24-hour format
Button operation tone on/off
Regular timekeeping: Hour, minute, second, am, pm, month, date, day
Accuracy: ±15 seconds per month (with no GPS signal reception and mobile link function)
Approx. battery operating time:
With GPS use
NORMAL (Intermittent reception): Approx. 33 hours
HIGH RATE (Continuous reception): Approx. 20 hours
*Approx. two months more for non-GPS functions
Without GPS use
Approx. 29 months with the power-saving function* on after full charge
*Power-saving after a certain period in a dark location

Size of case / Total weight
Size of case : 60.3×57.7×20.2mm
Total weight : 142g