This (relatively) little light from Trustfire packs quite a punch. One 18650 battery will get you 430 lumens, thanks to the CREE MC-E LED inside. Add in the optional sheath (shown below) and a couple of batteries for a complete package.

Specifications

• CREE MC-E LED
• Three modes: high, low, strobe
• 143mm (length) X 45mm (head) X 26mm (body)
• Revserse clicky switch