Product Details: 1.For dewalt 3 inch/5 inch lamps can be used for /For dewalt18V 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 durable 4.This product uses high-quality chips with a maximum brightness of 1000 lumens, surpassing 8 ordinary lamp beads, and brings light in the dark. 5.The lamp holder of this product can be rotated by 90 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. Package included:1 * LED light (Only light,no battery) Specification:Product name: USB with 3W lightInput parameters: 12V-24VOutput parameters:5V2.1A Material:ABScolour:Yellow Package Contents:1 x Lithium battery Adapter