: LED : Cree XP-G2 LED Battery : 1 AAA battery prime Beam Intensity : 780cd Max Beam : 57mLens : TIR Lens Input Voltage Range : 0.9V-3V oppositeness polarity protection : No Impact resistance : 1m Dimention : 65.6 mm -LRB- length -RRB- * 14.2 mm -LRB- head diameter -RRB- Weight : 9 gram without battery. Finish : Premium type III hard-anodized Output and run time -LRB- 1 mode -RRB- : 125 lm ; 40 mins Accessories : 1 * O-rings, 1 * keychain ring. Operation ON/OFF Simply twist the head to turn On/Off the bright. the head for on and loosen for unsatisfactory.