I’ve reported on Spracht's products before, and they are well known for their Bluetooth products and accesories. The latest is the Aura BluNote, a portable wireless speaker that can stream music wirelessly from any Bluetooth device.
Sure, devices like these are a dime a dozen, but this is one that promises to improve sound quality. Considering that the speakers are “smaller than a breadbox”, it makes up for it using a “bass boost and stereo widening feature to create a three-dimensional soundscape”.
Pairing is as easy as pushing a button on the device, and it should recognize a Bluetooth device right away. If you are using the BluNote to play music, the sound will automatically go down when someone calls. After that, you have a perfect speakerphone apparatus.
As for power, it can be plugged into the wall with an AC adapter, or, if you want to take it on the road, you will need 4 AA batteries which is good for about ten hours.