... plug; you can connect this cute mini speaker with your computer, laptop, mobile, DVD, CD, MP3, MP4, mobile phone, GPS, PSP ... +, and ON/OFF.7.Built-in lithium battery. Powered by computer USB port or through a power adaptor.8.High grade ... to carry.Apple shape Pocket mini speaker Specification:1.Built-in Lithium-ion battery;Power Supply:Lithium-ion,Computer-USB-in,DC ...