Rechargeable Directly :NS17 will never run out of power,can be recharged by USB cable,USB to wall or car adapter,Friendly red and blue battery indicator;
Dimensions:Length 106mm, Head Diameter 32mm,Tail Diameter 25.5mm;Weight:90g (without battery);smallest lightest USB 18650 flashlight;
LED:CREE XM-L2 U3,Max output:1000 lumen;Aviation aluminum vacuum electroplating reflecting system;Max luminous flux:13500cd;Max beam distance:232m;