Niteye TF40 CREE XM-L U2 LED 520 Lumen Flashlight ABS Â By loosen and tighten

 By loosen and tighten the head to switch between five output mode - lowest for longest runtime at 5 lumens

Lens: Anti-scratch polycarbonate

Overall Length: 6

BURN TIME 200 Hours

Compatible lights examples: INOVA X0

Niteye TF40 CREE XM-L U2 LED 520 Lumen Flashlight ABS Â By loosen and tightenThe Niteye TF40 is an extended version of the TF20, with the same output, but double the runtime. A rotary ring on the head lets you quickly switch outputs and access strobe. The light is powered by 4 CR123s or 2 18650s. 1. Light source: 1xCree XM L U2 LED 2. Battery: 4xCR123 0r 2*18650 3. Output & Runtime: 2 520LM 2 100Hours 4. Output regulation: magnetic ring infinitely variable dimming switch and tail cap switch 5. Circuit design: constant current