Knog pop duo light setwhat 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 featuresfront lightmaterials pc abs plastic housing and polycarbonate lensoutput 35 lumensdimensions 25x25x75mmbattery 1x aa batteryweight 56grear lightmaterials p