PRO-POWER - Portable speakers Easy, lightweight travel size solution to listen to iPod, MP3 player, DVD player and laptop. Includes removable holder to securely hold your iPod Can be used with any portable audio device with a mini-jack output, including laptops. Foldable design makes it the perfect item to take with you when travelingSpecifications - Power Supply - USB power cord (included). Also, not included for 4 AAA Batteries (DC 6.0 Volts) or AC Adaptor (6V 800mA)