The Luminox XB.3741 Bear Grylls Survival Master Men's Watch features a small self-luminous "gaslamp" made by a top Swiss Institute for Lightning Components Mb-Microtec. These individual lamps (Boros capsules) are gently incorporated into the hands, markers and in case of diving watches also to the rotating bezel. The lifetime of Luminox illumination LLT is up to 25 years and 100 times brighter than conventional watches.
Watches marked with water tightness 300M/30ATM are designed for swimming, snorkelling, and professional diving with breathing apparatus. 300M/30ATM indicates the degree of water resistance standardized by ISO 6425. ISO tests include temperature changes, depth, pressure (water and air) for different times under rest and during manipulation with the operative part of the watch. The dive models subsequently perform the test of resistance to salt water and the ability to cope with the watch positive pressure (decompression simulation).
Sapphire glass in the watch was made in a laboratory by melting aluminium oxide (Al2O3) in the presence of hydrogen and oxygen at 2000 °C. After crystallisation into the corundum 'pear', it's cut and further processed into the desired shape and size. Sapphire glass is the hardest glass used in watches. It would be second behind diamond on the scale of mineral hardness, so it can only be scratched by diamond. Its only disadvantage is its fragility.
The case material is carbon which gives not only a sporting and dynamic touch but also creates a long-lasting and extremely durable strap with a significantly increased lifespan.
- Rubber Strap
- Sapphire Glass
- Anti-reflective Coating
- 300m Water Resistant
- One-sided Rotating Bezel
- Carbon Housing
- Permanent Lighting for up to 25 years
|Function||Time & Date|
|Water resistance||Up to 300 m|
|Diameter of the box||45 mm|
|Thickness of the box||14 mm|
|Strap Width||24 mm|