The JJC RM-S1 remote control is designed as a replacement for the Sony RMT-DSLR1 and RMT-DSLR2 infrared remote control (Remote Release and Video Recording Function). Perfect for taking pictures of subjects that are difficult to approach, or to minimize vibration for close-ups and time exposure. The robust remote control supports a large number of features (releasing, zoom etc.) that may vary from camera model to camera model. More information can be found in your camera instruction manual. Power by a CR2025 button cell (supplied) .