I picked up 4 of these to mess around with.
After testing to see if it works, I got bored and took it apart to see what makes it tick.
The heart of it is a nFore NF2301 [nforetek.com]
embedded CSR BlueCore5 Multimedia chip that incorporates a Bluetooth V2.1+EDR chip that supports A2DP and a DSP coprocessor audio chip. Probably has 16Mbit flash memory.
Powering it is a 7.4Wh li-ion battery, perhaps 1000mAh at 7.4V.
The wiring seems pretty simple to modify to convert the speaker leads into an AUX jack so it can output the audio to, say, headphones or the car stereo. The little motherboard and battery measures only 9cm x 3cm x 1cm.
Good little gadget to hack for only $5.
Last edited by chiko88; 10-16-2012 at 12:46 AM..