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.
