Led Light -material:aluminum alloy -bult life:100000 hours -advantage:waterproof, shock-resistant Led Light-material:aluminum alloy-bulb: 14 leds-bult life:100000 hours-switch:tail-cap push switch-advantages:waterproof, shock-resistant, easy to carry-uses:gift and general lighting ps:-take out batterys if without using for a long time-do not irradiate into eyes as its high brightness