PHOLSY remote release, with zoom and focus functions. Bluetooth remote control (SONY RMT-P1BT compatible). Works perfectly. - Brand: PHOLSY - Function: Remote release (Bluetooth connection) - Number of buttons: 5 - Zoom/Focus function: Yes - Power supply: DC 3V As shown in the image, there is a white arrow (white paint) indicating power ON on the side button, so it is listed as having scratches and dirt. I prefer wired cables and rarely use this, so I am selling it. Thank you for viewing.