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Isobrite Valor Series ISO351 Mid-Size Isobrite Valor Series ISO351 Mid-Size
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Isobrite Valor Series ISO351 Mid-Size

In Stock

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+ $12.95

2-Year Warranty


At 39.5mm in diameter, the Swiss Made Isobrite Valor Series ISO351 mid-size watch is the smallest model we’ve ever made with the ultra bright T100 tritium markers. The Swiss tritium markers will glow for up to 50 years. To ensure uninterrupted service, the watch is powered by a reliable Swiss Ronda 505 quartz movement. When your adventure involves water, this watch is ready to accompany you diving down to 200 meters. Constructed out of lightweight carbon fiber reinforced polycarbonate and scratch resistant sapphire crystal, the watch weighs in at under 3 ounces. Plus, the included 20mm polyurethane strap provides the utmost in comfort and adaptability.

Illumination: Swiss-Made T100 tritium markers
Functions / Features: Date display
Movement: Swiss-Made Ronda 505 quartz
Battery Life: 45-months
Crystal: Scratch-resistant sapphire with anti-reflective coating
Case Diameter: 39.5mm
Case Thickness: 12mm
Case Material: Carbon fiber reinforced polycarbonate
Caseback: Stainless steel engraved plate fixed with 4 security screws
Bezel: Unidirectional ratcheting diver bezel with a tritium elapsed minute marker
Crown: Double-gasket push-in with side shields
Water Resistance: 200m / 660ft / 20atm
Band Material: Polyurethane
Band Width: 20mm
Band Clasp: Stainless steel deployment buckle
Weight: 3 ounces

Key Product 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 up to 50 years. No external power source or charging-by-light is necessary to maintain the glow. The glow is completely self-powered.