1,Use Cree U2 white LED with a lifespan of 10,0000 hours.
2,Powered by one 18650 rechargeable Lithium battery.
3,125mm Length x 33mm Head Diameter x 24mm Tail Diameter.
4,106 grams(excluding battery) .
5,Micro USB charging.
6,Made of durable aircraft-grade aluminum
7,Tail tap switch for on/off and output selection.
Lable:  telescopic focus