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Isobrite ISO702 Swiss Made Automatic with 64 x T100 Tritium Markers Isobrite ISO702 Swiss Made Automatic with 64 x T100 Tritium Markers
Isobrite ISO702 Swiss Made Automatic with 64 x T100 Tritium Markers
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Isobrite ISO702 Swiss Made Automatic with 64 x T100 Tritium Markers

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64 Ultra Bright T100 Tritium Markers
64 Ultra Bright T100 Tritium Markers

Tritium overload best describes this new 64-tube Swiss Made T100 tritium automatic watch by Isobrite. It is a masterpiece of colors, design, and function. There are 60 tritium tubes on the dial to mark each minute/second, 3 tubes on the hands, and one tube on the unidirectional diver bezel to keep track of elapsed time.

Equipped with a reliable and proven ETA 2824-2 Swiss automatic movement, the watch does not need a battery to power the movement or the illumination. Constructed out of 316L stainless steel and protected by a scratch resistant and anti reflective sapphire crystal, this watch feels solid, rugged, and utterly comfortable.

From dressy to diving to night activities, there is no need to swap out watches. Moreover, the screw down crown ensures a water resistance of 300m (990ft), perfect for diving into the deep. The watch also has an exhibition caseback to allow you to enjoy the workings of the mechanical movement.


Illumination: 64 x Swiss-Made T100 tritium markers
Functions / Features: Date display at 6:00, see-through caseback, hacking, hand-windable
Movement: Swiss-Made ETA 2824-2 mechanical with 25 jewels, a self-winding bidirectional central rotor, an Incabloc shock protection system, a stone lever escapement, and an ETACHRON regulator system
Power Reserve: ~38 hours
Vibrations Per Hour: 28,800 (4 Hz)
Crystal: Scratch-resistant sapphire with anti-reflective coating
Case Material: Black PVD 316L stainless steel
Case Diameter: 49mm
Case Thickness: 15mm
Caseback: Stainless steel engraved screw-in plate with exhibition window
Bezel: Unidirectional ratcheting diver bezel with a tritium elapsed minute marker
Crown: Double-gasket screw-in with side shields
Water Resistance: 300m / 990ft / 30atm
Band Material: Black PVD stainless steel
Band Width: 22mm
Band Clasp: Stainless steel push button deployment buckle
Warranty: 2 years

Design Features
Design Features

Swiss T100 Tritium Illumination

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 many decades. No external power source or charging-by-light is necessary to maintain the glow. The glow is completely self-powered.

Scratch-Resistant Sapphire Crystal

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.

316L Stainless Steel Case

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.

Swiss-Made ETA Mechanical Movement

The watch is powered by a Swiss-Made ETA 2824-2 mechanical movement with 25 jewels and a power reserve of ~38 hours. This reliable hand-windable movement features a hacking function and a date display.