The Edifier MP211 is a good-looking, small and inexpensive Bluetooth portable speaker. Here we have a quick blast with the unit to see, initially, if things are any good. The MP211 features:

Bluetooth 4.0 Technology with NFC connection
Twin 1.5 inch neodymium drivers & passive bass radiator
AUX input & Micro SD card playback
Built-in rechargeable battery with up to 10 hours of use
Take calls directly from the speaker with the built-in microphone

You can pick one up from Amazon here.