GT Nano is the 10180 battery version in the classic BLF GT family. It is a super tiny yet ultra throw keychain flashlight. With a length of 52.5mm and 17g in weight, this tiny flashlight can burst into a max of up to 450 lumens output and up to 300 meters amazing throw. The included 10180 Li-ion battery and a Micro USB charger allow the flashlight ready to use and easy to be charged. Defaulted smooth ramping UI, optional advance settings, IPX-8 waterproof, GT Nano is a must-have for your EDC collection.