Features:
1) Aluminum alloy housing
2) portable and compact design, product size: 34 dia. (head) x 24 dia. (body) x 126 (long) mm, weight: 151g (not included battery) 
3) 1X 18650-3.6V chargeable lithium battery (included)
4) 1W LUXEON  high-power LED, 30-40 lumens

    3W LUXEON  high-power LED, 70~80 lumens
5) Long life and power save
6) revolving on/off swich in the tail
7) explosion proof, shock-proof and weather-resistant
8) Color: black, silver  (customer's color is acceptable)