There are a lot of speaker docks on the market today and one of the things that most of them have in common is size. A speaker dock tends to be sized to use in the home or office rather than for use on the go. EFO has announced a new speaker dock that is sized for on the go and has a rechargeable battery inside.
The device is called the Rechargeable Mini Loud-speaker and sells for $22. Inside the little case is a lithium battery that can power the speaker dock and charge dockable iPods. It has an aluminum vibration film loud speaker designed for sound quality.
The internal battery is charged via USB and the device has a memory card slot and a USB port for playing tunes directly for removable media. Dimensions are 16cm x 5cm x 5cm and it weighs 273g. Total power is 3W per channel.