Luminox’s motto, Every Second Counts, dovetails flawlessly with Grylls’ Never Give Up. There is no better watch to be on Bear Grylls’ wrist than a Luminox.It’s incredibly important to me to work alongside world class trusted partners and Luminox have proved that and more. The rugged watch range has been carefully crafted featuring multi-functional design and state of the art materials - set to inspire and encourage the adventurer in everyone - men and women, boys and girls, outdoor novices and experts. - Bear GryllsSPECIFICATIONSOrigin: Swiss Made Always Visible: Constant glow for up to 25 years in any light condition Size/Diameter: 45mm Water Resistance: 200 meters, 20 ATM, 660 feet, individually tested Movement: Ronda 515 HF 6 Battery/Battery life: 395 / 50 months Case: 316L stainless steel Bezel: CARBONOX+, bi-directional rotating bezel Case back: 316L stainless steel, screw in Crystal: Sapphire with anti-reflection coating Crown: 316L stainless steel, crown protected Height: 13mm