Technical features: rechargeable low-voltage lithium battery with USB cable included; 1A current draw for use of any USB sockets (i.e. 14.516xx/14517.xx); small USB port for recharge and large USB port to use the torch as energy source for cell phones; floating.5 light functions:A) SPOT+COH-HI, 1400 lm, 1h duration;B) SPOT-HI, 950 lm, 1.15h duration;C) COB-HI, 750 lm, 1.45h duration;D) COB-LO, 45 lm, 20h duration;E) FLASH, 45 lm, 3h duration.