Because the DYMO® LabelManager 420P label maker is powered by a rechargeable lithium-ion battery, so it uses the same technology as mobile phones or laptops, you don't have to suffer the inconvenience of using AA batteries. Charge the device and enjoy the freedom that the power adapter did not give you - the ability to print labels is at your disposal, wherever you are. The new design of the label maker fits perfectly into any office and workspace. Prints barcodes: UPC-E, Code-39, Code-128, EAN 13, EAN 8, UPC-A