Aukey MUSE Portable Wireless Bluetooth Speaker, 10 Hour Playtime, Dual 5W Driver, Enhanced Bass, Full, High-Def. Sound, Built in Mic, 3.5mm AUX Port (SK-M2, Silver)
The Bluetooth connection is very poor.  The connection cuts on and often frequently, often times disconnecting altogether.  If it disconnects completely I have to turn it off then back on and re-pair.  This is not a range issue as most of the time I've had my phone sitting directly next to the speaker.  The battery is only good for 10 hrs of standby time, not actual playing time.  I purchased this to use in my classic car that doesn't have a stereo, but its poor battery life and Bluetooth connection have no