Just got Dacom DA-D1 and found it's awesome. This is stereo bluetooth with oled dispaly. It looks as black as defy, manufacturer not shamed place it's name on device and specs are really pretty. I've got it just today and can really say it works with defy on distances about 7-8 meters through 2 solid-made walls ). Really good results, even awesome for device price (got it ~27$ with delivery on ebay). You can find it querying "bluetooth oled", "da-d1" on ebay, also visually searching "stereo bluetooth" around 26-36$. And also, it charges from any standart usb port, so it could be charged about anywhere - charger cable looks the same as "3.5mm to USB ipod"). And also, btw, it's could be _really_ loud, i've tryed listen audiobook @metro - could not hear anything with standart 3.5 headset in standart 3.5 jack, i guess this headset plays ~1.5 times louder.
some pics, just grab them from same ebay lot page: