The I1R EOS is a tiny rechargeable LED keychain flashlight with dual output settings ranging from 5 to 150 lumens. The I1R EOS is a tiny rechargeable LED keychain flashlight with dual output settings ranging from 5 to 150 lumens. It weighs only 13,5g and has an extraordinarily compact size. The I1R is built from strong aluminum alloy and features a built-in rechargeable Li-ion battery that charges through a Micro-USB port when the light head is unscrewed and removed. The I1R features a high-performance Philips LUXEON TX LED paired with a TIR optic lens producing a soft and balanced beam. Changing outputs (5/150 lumens) is simple just by twisting the light head. The I1R EOS is the perfect daily carry keychain flashlight with high output, convenient charging, and easy mode changing. Lightweight and Tiny. The entire light is slimmer than a pinky finger with the length shorter than a AAA battery and weight at only 0.47 oz/13,5g.Features a high-performance Philips LUXEON TX LED paired with a TIR optic lens producing a soft and balanced beam.Rechargeable through a built-in Micro-USB charging port. Fully charged within 1 hour and 15 minutes.ON/OFF and output changes are controlled through twisting the flashlight head. Twist it slightly to turn it on at 5 lumens and a bit further for 150 lumens.