Neewer IR Wireless Shutter Release Remote Control for Sony Alpha Series A65, A77, A230, A330, A450, A500, A550, A560 DSLR Cameras and NEX-7, NEX-5C, NEX-5N Compact Cameras(2 Pieces) The wireless shutter release can trigger the cameras shutter release remotely from a distance. Eliminates vibrations caused by physically pressing the shutter release. Wireless control allows users to step away from the camera when shooting. Operating range up to 32 ft/1m. It is powered by a CR-225 3V lithium battery (included). Sony compatible.