The Firefly MegaGlow Marker delivers powerful, long-lasting glow using the brightest tritium light source available. Designed for professionals and enthusiasts alike, it's perfect for marking gear, routes, or danger zones in low-light or pitch-dark environments—without electricity, heat, or batteries. Powered by the largest size GTLS (Gaseous Tritium Light Source), the MegaGlow offers unmatched brightness and a glowing range of up to 40 metres. It operates silently, emits no heat signature, and remains active for over a decade with zero user input. Built for Performance: Fitted with the largest trigalight® vial for maximum brightness Over 10 years of uninterrupted glow – no maintenance required Zero batteries, bulbs, switches, or charging Produces no heat or noise – ideal for covert/night ops Functions in extreme environments and weather conditions Includes stainless steel split-ring for secure attachment Lightweight and easy to carry Material & Finish: Impact-resistant clear V0-rated polycarbonate body Polished stainless steel end-caps for strength and visual appeal Colour Options: Choose from 9 vibrant tritium vial colours to suit your visibility or identification needs: Green Yellow Orange Red UV-Blue White Purple Pink Ice-Blue Specifications: Length: 41.0 mm Diameter: 10.5 mm Split-Ring Diameter: 18.0 mm Weight: 8 g Body: Clear V0 Polycarbonate Caps: Stainless Steel Whether for tactical operations, personal safety, or outdoor use, the Firefly MegaGlow is a rugged, no-maintenance glow marker trusted by those who can’t afford to be left in the dark.
