I must have gotten lucky because they were selling it for $55. I've had it for two days so far and love it. No wires and connects right into my aux jack. Not sure if this is what you were looking for but I HIGHLY recommend it. Awesome quality and the phone stays in my pocket
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My $100 JVC headunit has front and back USB ports (if I want to go that route, I usually just leave a 32GB thumb drive loaded with music plugged in) and bluetooth, so I use that. Works with music, XM app, and Pandora (doesn't allow controls on the XM app but still plays audio). Works great. Came with a mic and plays the calls through your car speakers.
I use a Plantronics M25. Got it at walmart for $28.
Its the first bluetooth I have used so I don't have anything to compare it to but I am happy with it. I primarily use it to listen to music and podcasts while driving my truck and Siri works well about 90% of the time.
I drive semi trucks so its very loud in the cab. People I am talking to can hear a lot of engine noise but can still hear me well. And the volume level is good enough to hear with the engine revving and jake brake rattling away...
I also love the features of Bluetooth V3 and A2DP that lets me listen to podcasts and music through the earpiece.
The battery life is pretty good. I can listen to podcasts for a whole 10 hour shift and take a few calls and the battery has about 10% left. BTW, with BT v3 the iphone 5 shows the battery level on the iphones screen.
handsfree built into my BMW's headunit (2011 E90 335d), Blackberry Music Gateway tucked away in the center console for A2DP streaming. This combination works like a champ.