Isobrite T100 Tritium Chronograph Watch Kitsearch

Isobrite T100 Tritium Chronograph Watch Kit

Isobrite T100 Tritium Chronograph Watch Kit

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T100: World’s Brightest Tritium Illumination

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.

Note: At checkout, choose between black/red and blue color options.

Isobrite T100 Tritium Chronograph Watch Kit
Isobrite T100 Tritium Chronograph Watch Kit
Isobrite T100 Tritium Chronograph Watch Kit
Isobrite T100 Tritium Chronograph Watch Kit

200-Meter Water Resistance

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.

Isobrite T100 Tritium Chronograph Watch Kit

About ArmourLite

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.


  • ArmourLite
  • Swiss-made T100 tritium illumination
  • Swiss-made Ronda 5040.D quartz chronograph movement
  • Scratch-resistant sapphire crystal with anti-reflective coating
  • Carbon fiber-reinforced polycarbonate case
  • Stainless steel engraved plate caseback fixed with 4 security screws
  • Battery life: 54 months
  • Case diameter: 47 mm
  • Case thickness: 14 mm
  • Band width: 24 mm
  • Max wrist circumference: 9.75 in (24.8 cm)
  • Unidirectional ratcheting bezel with 2 elapsed minute tritium markers
  • Double-gasket push-in crown with side shields
  • Date window
  • Water resistance: 200 m (660 ft)
  • Weight (with silicone band): 3 oz (85 g)


  • Silicone band (on watch)
  • Nylon strap
  • Velcro strap
  • Spring bar pin tool
  • Keychain compass
  • Watch case
  • Instruction and warranty booklet
  • 2-year warranty


All orders will be shipped by the vendor.

Estimated ship date is Dec 11, 2018 PT.

After the drop ends, payment will be collected and the group’s order will be submitted to the vendor up front, making all sales final. Check the discussion page for updates on your order.