Specification: Communication method: Bluetooth camera shutter remote control Dimensions: 48mm x 30mm x 10mm Maximum range: 30 feet (10 meters) Frequency: 2.4GHz2.4835GHz Instructions: 1: Turn on the remote control switch, and the blue indicator light of the remote control will flash. 2: Turn on the Bluetooth of the mobile phone, search for new devices, and connect. 3: After pairing and connection, open the camera software in the mobile phone. 4: Apple mobile phones can directly press the remote control shutter to control the camera. 5: The Android mobile phone part can also directly press the shutter to control the photo. 6: For Android phones that cannot control the camera, please download the camera360 software. After opening the camera360 software, click the setting icon in the upper right corner, then click settings, then click camera settings, and set the volume button function option to take pictures.