CONVENIENT USB CABLE Powered by batteries (not included) and USB power cord (Included), Input: AC 100-240V 50/60Hz, Output: 5V 2A. Different from the battery-powered swings, ours can be connected to a power bank with the included USB power cord to meet unexpected needs. SAVE SPACE & PORTABLE This baby swing has a very powerful folding function and saves space. You can easily put it in the gap between the furniture. At the same time, it can also be placed in the car when traveling, and the baby can also enjoy it by staying with it during a picnic or party. This is all thanks to its power supply method.The soothing portable baby swing is powered by a USB cable,4 pieces of batteries or power bank indoor and outside.