Isobrite T100 watches have tiny glass tubes that are filled with up to 100 mCi of tritium gas and then hermetically sealed. The electrons of the gas continuously react with phosphorescent paint resulting in a radio luminescent light source that glows constantly for up to 50 years. No external power source or charging-by-light is necessary to maintain the glow. The glow is completely self-powered.
The watch is protected by a scratch-resistant sapphire crystal with an anti-reflective coating. The strength and superior scratch resistance of sapphire crystal is the reason why it is used in nearly all high-end luxury watches.
The watch features an ultra tough and corrosion resistant 316L stainless steel case with a diameter of 49mm. The double-gasket screw-in crown on the right side of the case is protected by two side shields. For keeping track of elapsed dive time, the case has a unidirectional ratcheting diver bezel with a tritium elapsed minute marker.
The watch is powered by a Swiss-Made ETA 2824 automatic movement with 25 jewels and a power reserve of ~38 hours. This reliable hand-windable movement features a hacking function and a date display.
