Features: USB 5V to 4.5V AA virtual battery power cord set. Input USB 5V2A, virtual battery output 4.5V1A, replacing 3 1.5V AA LR6 batteries. Money saving, environmentally friendly, reusable, no need to frequently replace batteries, the green ones are fake batteries used as conductors. It can be powered by a mobile power supply with a USB interfaces and a USB adapter. Suitable for Christmas decorative lights, toy, remote control, LED lights, etc. Specifications: Material: Plastic Total Length: 200cm, 100cm(optional) Length: Approx. 200cm/6.56ft, 100cm/3.28ft Note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution. Package includes: 1 Set USB 5V to 4.5V AA Dummy Battery Power Cord