1. The 3 inch/5 inch lamps can be used For dewalt 14.4v/18V lithium battery.2.USB output interface: 5V 2. 1A, which can provide power support for mobile phones, speakers, fans and other devices anytime and anywhere.3.The lamp holder is made of zinc alloy for better heat dissipation, strong and durable4.This product uses high-quality chips with a maximum brightness of 2000 lumens, surpassing 8 ordinary lamp beads, and brings light in the dark.5.The lamp holder of this product can be rotated by 90degree and is suitable for many occasions. No matter where it is placed, adjust the angle to illuminate the work site you need.6.Large reflective surface and wide lighting range, used indoors or outdoors, can illuminate a large area of work, and can also be used as an emergency light.7. 5 inch lamps has three grades, press the switch button once, it is the first grade, the brightness is weak, and the lumen is 900LM; press the switch a second time, it is the second grade, the brightness is medium and strong, and the lumen is 1100LM; press the switch for the third time, it is the third grade , Brightness, lumens 2000LM. Long press to turn off the lights in any mode.8. 3-inch lamps has two grades. Press the switch button once, the first grade, the brightness is medium and strong, and the lumen is 500LM; when the switch is pressed the second time, it is the second grade, the brightness is strong, and the lumen is 1000LM. Press the switch a third time and the light flashes. Long press to turn off the lights in any mode.type:9Wtype:BColour:yellow+black+transparentMaterial:Plastic + MetalSize:20 x 7.5 x 15cmPackage Contents:1 x LED light (Only light,no battery)Only the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.