The black E1B Backup with MaxVision High-Output LED Flashlight from SureFire is a dual-output LED light featuring a 400-lumen maximum output and SureFire's MaxVision beam, optimized for the user's field of view. A low-output 5-lumen setting allows you to extend the runtime of the EB1 up to 50 hours. This configuration of the Backup flashlight has a dual-function push-button tailcap switch that provides both momentary and constant activation of the light's two output settings.

The EB1 housing is machined from an aluminum alloy and finished with a Mil-Spec anodized hard coat. The corrosion-resistant housing is O-ring and gasket sealed for reliable, waterproof performance. Complementing the Mil-Spec housing, the lamp assembly has a tempered, impact-resistant window with an anti-reflective coating. An integrated two-way pocket clip makes the EB1 Backup a full-featured illuminator for tactical and recreational use.