These G-SHOCK Master of G “GRAVITYMASTER” GR-B200 models pack flight mission essential functions into a tough and rugged carbon core guard structure.
A high-strength, highly weather-resistant carbon core guard structure protects the module with a resin case reinforced with carbon fibers. This, combined with world-renowned G-SHOCK shock resistance, creates a structure that is also highly vibration resistant.
The bezel is made up of three layers of resin with carbon fiber inserts. The top layer is semi-transparent to reveal the carbon material inside. The three buttons on the right side of the watch are arranged in a way that makes them resemble a helicopter control stick, while also contributing to ease of operation.
The Quad Sensor system of these models uses compact sensors that make it possible to pack compass, altitude/barometer, and temperature measurement capabilities, along with an accelerometer that keeps track of your step count, into a compact configuration. This makes it easy to keep tabs on the natural environment around you and to maintain logs of your activities for comprehensive flight mission support.

Specifications:-

• Shock Resistant
• Mineral Glass / Spherical Glass
• Neobrite
• Vibration resistant
• 200-meter water resistance
• Case / bezel material: Carbon
• Resin Band
• Double LED light
  LED light for the face (Auto LED light, Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow)
  LED backlight for the digital display (Auto LED light, Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow)
• Mobile link (Wireless linking using Bluetooth®)
• Digital compass
  Measures and displays direction as one of 16 points
  Measuring range: 0 to 359°
  Measuring unit: 1°
  60 seconds continuous measurement
  Hand indication of north
  Magnetic declination correction
  Direction calibration (2-point calibration, figure eight calibration, auto calibration)
• Altimeter
  Measuring range: –700 to 10,000 m (–2,300 to 32,800 ft.)
  Measuring unit: 1 m (5 ft.)
  Hand indication graph of altitude differential
  Manual memory measurements (up to 14 records, each including altitude, date, time)
  Auto log data (High/low altitudes, cumulative ascent and descent)
  Others: Relative altitude readings (±100 m /±1000 m), selectable measurement interval: 5 seconds or 2 minutes (1 second for first 3 minutes only)
  *Changeover between meters (m) and feet (ft)
• Barometer
  Measuring range: 260 to 1,100 hPa (7.65 to 32.45 inHg)

Size of case :  63×54.1×18.3mm

Total weight : 80g