Bought this to connect my iPod Nano to my
GEAR4 PG118 BluPhones Bluetooth Headphones.
Good: Works really well indoors and on the train/tube and reasonably well outdoors around my local area, with occasional dropouts, but nothing too bad. No longer get strangled by earplug cord or get annoyed by plugs dropping out my ears.
Bad: Doesn't work particularly well above ground in central London and didn't work at all when I tried to use it while running around Virginia Beach (work trip!) - combination seems to suffer from heavy interference. Furthermore, can't connect my iPod to iTunes via the bluetooth connection - minor niggle.
Verdict: Still a good purchase in combo with bluetooth headphones. Generally aggro free, in the right environment. Good enough that I'm going to buy one for my son's iPod Touch, along with some headphones.