Xedge Unveils NoxTi Titanium Keychain Delivering Twenty Five Years of Constant Illumination Through Tritium Physics

Discover the NoxTi titanium keychain by Xedge, a 45mm EDC tool using tritium physics to glow for 25 years without batteries or charging.

By: AXL Media

Published: Apr 11, 2026, 9:01 AM EDT

Source: Information for this report was sourced from Yanko Design

A Permanent Light Source Powered by Isotopes

The NoxTi keychain by Xedge introduces a radical departure from traditional portable lighting by utilizing the natural decay of tritium to produce a constant glow. Unlike LED lights that require batteries or photoluminescent materials that need sunlight to charge, this device relies on pure material physics. Tritium, a hydrogen isotope with a half-life of 12.3 years, emits beta particles that strike a phosphor coating to create light. According to Xedge, this process ensures the keychain remains visible in total darkness for up to 25 years, providing a level of reliability that electronic alternatives cannot match.

Aerospace Engineering in a Miniature Frame

The structural integrity of the NoxTi is defined by its CNC-machined Grade 5 titanium body, a material favored in the aerospace industry for its high strength-to-weight ratio. Measuring 45mm in length and weighing only 10.7 grams, the frame is designed to withstand extreme environmental conditions, ranging from negative 20 to 50 degrees Celsius. The titanium alloy ensures the device is entirely resistant to corrosion from salt water, sweat, and various chemicals. This robust exterior protects the internal light core while maintaining a footprint roughly the size of a standard AA battery.

Optical Clarity and Radiation Safety

At the center of the device, the tritium vial is encased in a precision-engineered quartz tube. This material was selected over cheaper plastics or acrylics because it offers 92% light transmission and will not yellow or scratch over decades of use. From a safety perspective, the beta particles emitted by the tritium are too weak to penetrate the quartz or even a thin sheet of paper, ensuring the radiation remains entirely contained. In the event of a structural failure, the tritium gas would dissipate harmlessly into the atmosphere without leaving behind any toxic residue or lingering hazards.