【Wireless Remote】Radio Wireless Connection: It works from behind the camera as well as from in front, not having to be in direct line of sight to the camera like an infrared (IR) remote, so it is much more flexible and convenient than IR remote control
【Wireless Remote】16 possible radio channels, Operate on Radio Frequency 433 MHz. Can trigger cameras wireless or wired, wireless range up to 30 meters / 100ft
【Wireless Remote】Can wirelessly trigger the camera shutter under 5 modes: single shot, unlimited continuous shots, bulb shot, 3 continuous shots and 5 seconds delay shot. (Note: It's not able to control video start and stop)
【Shutter Release Button】Total 2 pcs in the packaging, one is convex surface with a diameter of 10mm, the other one is concave surface with a diameter of 11mm
【Shutter Release Button】Made of brass, add comfort and the ability to use slower shutter speeds with improved sharpness. Easy to use, just screws it into the threaded shutter release socket of your camera