Isobrite T100 Tritium Chronograph Watch Kit

Available exclusively on Massdrop, this Isobrite T100 Tritium Chronograph Watch Kit from ArmourLite Watch Company features a lightweight chronograph watch in two different colors, plus three bands and a few other extras to prepare you for the field. The dial features bright markers containing tritium—an isotope of hydrogen that glows in the dark—while the carbon fiber-reinforced polycarbonate case is equipped with a push-in crown and an anti-reflective scratch-resistant sapphire crystal. This version is outfitted with T100 tritium illumination, which is four times brighter than the T25 variety used in most standard tritium watches. Manufactured by Switzerland’s Trigalight, these tritium markers are currently the brightest and longest-lasting available in the world.

Water resistant to 200 meters, this timepiece is scuba approved and ready for any type of weather. For accuracy, the watch is equipped with a Swiss Ronda 5040.D quartz movement, plus a 54-month battery for longevity. A unidirectional dive bezel helps keep track of elapsed time, while the pushers at 2 and 4 o’clock control the handy chronograph. Also included in the set are three separate wristbands, a spring bar pin tool, a keychain compass, and a watch case for storage.

Based in Miami, Florida, ArmourLite Watch Company designs and manufactures Swiss tritium-illuminated watches for military and law enforcement personnel, first responders, and rugged outdoorsmen under the brands ArmourLite and Isobrite. Known for their accuracy and reliability, most products in their collection feature a shatterproof crystal, and all Isobrite models come with Swiss T100 tritium illumination—the world’s brightest.