Package includes:1*Blue Violet Laser Pointer1*Universal Two Slot Charger1*Rechargeable 18650 Battery 2*Rechargeable 16340 BatteryQuick Overview:1.Made of aviation grade metal.2.Safe lock design at the bottom.4.Unload the extended par to use 16340 battery.5.By rotating the focus ring to adjust beam light. Find the smallest spot of the beam light can light a matchstick.Specifications:1.Material: Aviation grade metal2.Dimensions: 5 x 1 inches3.Weight: 4oz4.Power supply: 1 x 16340 battery / 1x 18650 battery5.Laser range: 1.2-5 miles/2km-8k6.Output wave: Continuous wave7.Working voltage: DC=3.0-3.7V8.Start-up time: < 3 secondRechargeable 16340 Li-ion 3.7V BatteryRechargeable 18650 Li-ion 3.7V 4200mAh BatteryUniversal Two Slot Charger:Charging Battery Type: CR123A， 14500， 16340， 18490， 18650， 17670Charging Battery Qty: 2Input Voltage: AC 110~240 VOutput Voltage:4.2VOutput Current:450 mAProgressive patented technology: Three charging modes (CC， CV and Trickle Charge).How to Use:1.To lock off the laser pointer， key hole should align with the dot.2.Unable to light a matchstick because the beam is parallel light.3.Adjust the focus to enlarge the spot size.4.Find the Focus Point(the smallest spot size on the beam )， most powerful and capable of lighting a match.5.Keep out of the reach of children.6.Do not point directly at human or animals’ eyes.