Digiparts (TM) IR Wireless Remote Control for Sony Alpha Cameras A7R II, A7 II, A7, A7R, A7S, A6300, A6000, A55, A65, A77, A99, A900, A700, A580, A560, A550, A500, A450, A390, Wireless shutter release -trigger the cameras shutter release remotely from a distance Eliminates vibrations caused by physically pressing the shutter release Operating range- up to 32 ft It is powered by a cr-2025 3v battery (included) Make sure your camera sets to remote control mode.