It's pretty neat and well-built, and I have had no problems with this remote. The main 'feature' of this remote is that the receiver also acts like a wired remote, even without a battery. The wireless remote itself is pretty small, roughly the size of your index finger. There are also led lights that indicate if your picture has been taken (blinks red) and if it's ready (green) To buy it, just search 'Phottix' and your camera brand on eBay.

Receiver/wired remote: