1. The AAA eliminators to replace AAA Batteries, providing a convenient and cost effective solution for powering your devices. 2. Input USB5V, one black output is 4. 5V, two black batteries output is 3V, and the yellow virtual is 0V, only used as a conductor. 3. This product is mainly designed for decorative lights using AAA box, avoiding the problem of consumption and frequent replacement after prolonged use. 4. Replacing AAA batteries with this product saves the hassle of replacement and can save be energy saving. 5. Suitable for Christmas LED lights, toy, various holiday decorative lights, fan, cameras, and various 4. 5V 3V AAA powered product. Colour:Black & Yellow Material:plastic style:5-1 The actual product may have slight color difference or difference, which will not affect the use Package Contents: 1 set * AAA Eliminators Kit