Attention: The price only includes one lamp bead/optional lamp beads are required. Please contact customer service. The listed price does not include a battery charger. Please be informed. If needed, please contact customer service. Thank you for your understanding Tool free interchangeable LED lamp head light source, simple and convenient. Please refer to details for specific replacement: A. XPL2.0 white, approximately 1200 lumens- Distance: 500M B. XPE2.0 green light is about 350 lumens- Distance: 350M C. XPE2.0 red light is about 350 lumens- Distance: 350M D. XPE2.0 blue light is about 350 lumens- Distance: 350M E. UV violet 395nm LED- Distance: 50M Material: Aluminum alloy Light bulb: Multiple colors of light beams to choose from Light source: green; red White; Infrared; UV, etc Mode: 1 (high 100%) Current: 1.8A Working voltage: 2.8V-8.4V Battery: 1 x 18650 lithium-ion battery (not included) Color: Black Switch: On/Off Waterproof: IPX-68 Weight: 230 grams Dimensions: 145/155mm (length) x 55mm (head diameter) x 29mm (tail diameter) x 30mm (lamp body diameter) Attention: Please tighten the tail cover, otherwise it may not function properly due to poor battery contact Please keep the tail cover clean. If there is insulation material, it may cause poor battery contact and cause the lights to not light up