This model in the G-Shock Gravitymaster Series is the result of a collaboration with the Royal Air Force (RAF), the world's oldest air force. It has been designed for pilots working under harsh conditions. The base model is the GR-B200, equipped with a Carbon Core Guard structure and Quad Sensor featuring compass, altimeter/barometer, temperature reader and pedometer. The dark base gray color evokes the color used on aircraft, while white and green accents are reminiscent of the display colors of a glass cockpit, forming a design inspired by stealth aircraft. The words "Per Ardua Ad Astra" are printed on the band, Latin for "Through adversity to the stars" and the motto of the RAF. The RAF logo is also inscribed on the band ring. This is a special collaboration model between the RAF, who face the toughest of missions in skies across the globe, and G-Shock Gravitymaster, which supports pilots' every need with the most advanced watch features.