Luminox Watch Bear Grylls Mountain Orange XB.3739. This Bear Grylls Mountain Series watch features a 43mm very lightweight CARBONOX case and bi-directional bezel, marked with cardinal points, alongside a sapphire crystal face with anti-reflective coating for increased readability. Bear Grylls signature is engraved on the case back and his famous motto Never Give Up is inscribed around the edge of the dial. The signature Bear Grylls screw-in orange crown, orange dial outer ring and black integrated rubber strap, create unique design details.