Knog pop i front lightwhat some love might not be so loved by others so instead of compromising knog have made 10x designs for three lights some are mild some are wild but the striking form does not outshine the excellent function super bright aa battery powered long runtimes replaceable straps and side illumination featuresmaterials pc abs plastic housing and polycarbonate lenslight output 35 lumensdimensions 25x25x75mmbattery 1x aa batteryrun time 64 hrs steadylow 100 hr