1)Material: High Quality Aluminum Alloy
2)Bulb:Cree Q3 3W LED
3)Switch-High,Low,Flash,SOS                         4)Battery: 18650 Lithium                                   5)Work Time: High:90Mins, Low:180Mins                                          6)The Forehead could free to zoom,and adjust aperture size                                                     7)Size:L(11.2)*Head Dia.(3.0)*2.5cm                                 8)Weight:80g