The product sound and functionality are great... practically all cel phones nowadays are bluetooth capable, so you probably won't use the adaptor. The headseat pairs fast and easily with devices (I've got mine paired to both my iPhone and bluetooth-capable ham radio tx).Light's too bright -- it'll light up a room in technicolor at night. It's a bit big, too, and sticks out a bit too far from your face. It seems to stay put pretty well, though, and is comfortable. It's hard to ignore this one, it's like Darth Vader stuck his lightsaber in your ear.Good sound, though; and reliable. It's goofy, but I still like it.