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Casio G-Shock GPRH1000-9 RANGEMAN MASTER OF G-LAND Solar Heart Rate Yellow Watch


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  • 30 day returns
  • Free shipping
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  • 6-month warranty

At a Glance

Conquer demanding terrain and feel amazing with a rugged timepiece as bold and active as it is tough.

Designed to work in the harshest environments, the G-SHOCK RANGEMAN GPRH1000 from the MASTER of G line is a truly tough piece of outdoor gear. With a mud-resistant structure to keep out fine dust and dirt, it is designed to withstand the most punishing conditions and the worst weather situations.

This rugged timepiece is equipped with solar assisted charging, a heart rate monitor, built-in GPS functionality, and a high-definition, high-contrast memory-in-pixel (MIP) LCD for an easy read.

The case is guarded by sizable metal components on the left and right, protecting the GPS antenna and six sensors inside, to deliver what you need for a wide range of activities.

The trekking function allows you to check your heart rate while on the move so you can keep track of your physical condition during workouts.

Check the tide graph for low and high tides to get the most out of water sports.

Enjoy all this functionality, with no sacrifice in comfort. The soft urethane band delivers a comfortable fit that your wrist will love and is textured on the top side so that even wet fingers can tighten it without slipping.

The case, bezel, and band are made with bio-based resin, a material expected to help reduce environmental impact.

With the engraved silhouette of the RANGEMAN wild cat character on a band piece, every detail of this timepiece exemplifies the spirit of this MASTER of G line of specialty watches.
LED light

Included with Purchase

  • Casio G-Shock GPRH1000-9
  • G-Shock Outer Box
  • G-Shock Inner Tin
  • Instruction Module
  • 1 Year Casio International Warranty Card

Sensor Feature

  • Activities: Multi-sport (running, walking, biking, swimming, others); Calculate and display distance, speed, pace, and other information using GPS or 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, altitude gained, number of strokes, SWOLF
  • 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
  • Floor Elevation Measurement
  • Step reminder
  • Digital compass:
  • Measurement range: 0° to 359°
  • 16-direction display
  • Auto level correction
  • Altimeter:
  • Measuring range: -700 to 10,000 m (or -2,300 to 32,800 ft.)
  • Display range: -10,000 to 10,000 m (or -32,800 to 32,800 ft.)
  • Measuring unit: 1 m (or 5 ft.)
  • Measuring interval: 2 minutes/5 seconds
  • Altitude differential measurement: -3,000 to 3,000 m (or -9,840 to 9,840 ft.)
  • Altitude graph
  • Barometric Pressure Measurement:
  • Measuring range: 260 to 1,100 hPa (or 7.65 to 32.45 inHg)
  • Display range: 260 to 1,100 hPa (or 7.65 to 32.45 inHg)
  • Measuring unit: 1 hPa (or 0.05 inHg)
  • Auto measurement interval: 2 hours
  • Barometric pressure graph
  • Barometric pressure change indicator
  • Temperature Measurement:
  • Measurement range: -10.0 to 60.0℃ (or 14.0 to 140.0℉)
  • Display range: -10.0 to 60.0℃ (or 14.0 to 140.0℉)
  • Display unit: 0.1℃ (0.2℉)

Smartphone Link feature

  • Mobile link (Automatic connection, wireless linking using Bluetooth®)
  • Apps – Casio Watches

App Connectivity

  • Auto time adjustment
  • Easy watch setting
  • Time Zone 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
  • Sleep analysis data
  • Tide graph setting (approximately 3,300 global points)
  • Phone finder

World 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 datSunrise, sunset time display
  • Sunrise time and sunset time for specific data (moon age of the specific data, moon phase)

Tide Graph

  • 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


  • 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
  • Light color – 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 level indicator

Run Time

  • Using activity functions (GPS, heart rate):
  • HIGH RATE (continuous reception): Approx. 14 hours max.
  • NORMAL (continuous reception): Approx. 16 hours max.
  • LONG (intermittent reception): Approx. 19 hours max.
  • Using in watch mode with heart rate measurement OFF: Approx. 2 months
  • Using with power-saving function ON: Approx. 23 months
  • Varies depending on usage environment; from full charge, without solar power.
  • Accuracy: ±15 seconds per month (with no GPS signal reception and mobile link function)

Other features

  • Airplane mode
  • Vibrator
  • 12/24-hour format
  • Regular timekeeping:
  • Hour, minute, second, am/pm, month, date, day

Case size (L× W× H) 60.6 × 53.2 × 20.3 mm
Weight – 92g


Shock Resistant

Stable solar power

Keeps yourself in time

20 bar water resistant

Shock Resistant

Reviews & Ratings

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