Material: aeronautical grade reinforced aluminum 6061-t6

 Surface treatment: hard oxidation with thick anodes, dumb black

 Size: 170mm*32mm*25mm

 Led: a t6 lamp 10w

 Rated voltage: 3.7v

 Rated current: 500ma

 Power: 10w

 Battery capacity: a 2200mah lithium battery

 Lighting time: 3-4 hours

 Beam brightness: 50cm illumination lamp: =7500 lux

 50cm spot diameter: 21.5cm

 illumination uniformity: ≥ 90%

 Switch: single key control switch

 Weight: 0.22kg (containing batteries)

 Package size: 200*140*60

 Warranty: one year free warranty, life-long maintenance

 national patent has been obtained: zl 201430017747.9