Aux Bluetooth Adapter Dongle Cable For Car Speaker 3.5mm Jack Wireless 5.0 Audio Music Receiver With HD Hands-free  Specification Name: Aluminum Alloy Car Wireless Audio Receiver Colour:Iron-gray/Silver Material: ABS+TPE+Aluminum Alloy Size: 45.8*218*12.5mm (not includes cable) Cable Length: 1.4m Weight: About 18.3g Input: DC 5V BT Version: 5.0 BT Connection Distance: ≤10m Product Structure USB charging connector TF card slot Spring audio output cable 3.5mm& 65288;AUX& 65289;audio jack Multi-function button MIC Indicator Notes: Pictures for reference only, product please in kind prevail. Including: Product*1/User Manual*1 How to Use (1) Connect to power supply Insert the USB charging connector into the USB port of car/car charger/laptop * As the working current required for the product is too small, it is not recommended to use a power bank to charge for the product,otherwise may result in its current being cut-off. (2) Connect audio output devices Insert the 3.5mm audio jack into car 3.5mm audio port *It can also be plugged into an old-typed non-Bluetooth speaker with a 3.5mm audio port. (3) Connect audio input devices & 9312; BT mode:Turn on phone/ tablet’s Bluetooth,search “USAMS-SJ504” and click to connect, after first connection, it will automatically connect to the recently paired device. & 9313;TF Card Mode: Insert TF card with audio files Support TF card capacity: ≤128G Support TF Card System Format: FAT16/FAT32/FAT64/exFAT Support TF Card Audio Formats: MP3/WAV/FLAC/WMA (4) Connected successfully, ready to use (5) Connect two phones at the same time & 9312;Connection method: Connect to the first phone’s Bluetooth, and then turn off the phone's Bluetooth; Connect to the second’s Bluetooth; Turn onthe first phone’s Bluetoothand connecttothe product again. & 9313; Usage: When two phones are connected at the same time, if play audio of phone A, it will auto pause the audio of phone B. When playing audio of phone A, if phone B has a call coming, it will switch to call reminder of phone B, after hang up call, it will switch to phone A play mode. Button Operation Instructions: Answer/Hang up call: Press once Reject call: Press and hold for 2s Switch of BT/TF card mode: Press and hold for 2s Play/Pause: Press once Previous song: Press 3 times Next song: Press 2 times Notes: After power on, the product is in Bluetooth mode by default; when switching to TF card mode, you need to wait a moment for TF card file recognition before playing. If there is an incoming call when in TF card playing mode, the product will directly switch to Bluetooth mode and ringtone rings, after hanging up the call, it will switch back to TF card play mode.