Product Model 501B Number of wicks Single LED Wick color temperature Cool white: 6500K Long shot distance 100-300 meters Using battery 1 x 18650 rechargeable lithium battery Switch Type Tact Switch Switch position Tail switch Material used 6061 aerospace aluminum alloy, hard anodized Impact 1.5 m Waterproof grade IPX8 Product lens Coated hardened glass lens 98% light transmittance Product light cup Aluminum reflector, smooth cup (can be customized situation cup) Exterior color black Product weight 420g (including packaging) Product Dimensions 169mm x 74mm x 51mm Package size 220mm*120mm*80mm Flashlight Holder: Installation material: aluminum alloy Ring diameter: 25mm Rail type: 20mm Weaver standard rail 18650 battery: 1. Product model: Li-ion 18650 2.Rated capacity4000mAh 3. Nominal voltage: 3.7V, charge limit voltage 4.2V, discharge limit voltage 2.75V 4.Dimensionsdiameter*height=1865mm 5. Other requirements: It can be assembled into a battery pack according to actual needs. 6. Scope of use: Main uses: portable small fans, communication equipment, emergency lights, solar lights, searchlights, flashlights; charger: Rechargeable battery model: 3.6V/3.7V 18650 Li-ion battery AC input voltage (AC): 100V-240V DC output voltage (DC): 4.2V Output current: 0.7-1A Protection function: overcharge protection, reverse connection protection, automatic stop when full. Precautions: 1. Do not disassemble and modify the charger; do not contact the charger with water; 2. Do not use this Ni-MH, Ni-Cd and other batteries in this charger; 3. Please place the battery correctly according to the positive and negative. Reminder: This model can be charged for one section of 18650, it will automatically stop when fully charged, and the full voltage is 4.22V The indicator light has two states: Red light on - charging Green light on - battery is fully charged or no battery is inserted Package Included: 1 LED flashlight 1 remote switch 1 flashlight holder 1 x 18650 battery 1 AC charger (100v-240v) 1 x User Manual (Packaging set weight: 420g)