I using this commander since a year now and I'm using it constantly, as it's my only remote shutter controller. It's great. Very reliable keeps connection for hours and battery life is acceptable too. You can do 12-13k shots on one CR2032 battery. I've read the reviews below saying that it looses connection. Please check your camera settings as all power saving features of the camera should be disabled if you don't want to loose BT connection. I highly recommend this remote.