Universal 3.5mm jack Bluetooth Car Kit Hands free Music Audio Receiver Adapter Auto AUX Kit for Speaker Headphone Car Stereo Lapel type Bluetooth receiver point: Can make ordinary headphones, ordinary audio, ordinary car audio as long as the receiver through the 3.5 headphone jack can be turned into a Bluetooth headset Bluetooth stereo Bluetooth car Product parameters and features: Product accessories include: host + charging cable + adapter (this price is in pearl bags) basic skills: Device Name: Bluetooh Music Caller ID: Support Voice prompt: support Chinese and English dual voice: support (default English) One for two: support Pairing timeout shutdown: The pairing state lasts for 5 minutes and then shuts down. Low battery reminder: when the voltage is less than 3.2V, reminder once every 5 seconds, 3.1V shutdown system status: Power on and off: MFB long press for 3 seconds Volume plus: short press VOL+ Volume minus: short press VOL- Switch language: Double-click and hold MFB in the pairing state (red and blue to flash) Music control: Play pause: short press MFB Previous song: VOL - long press for 2 seconds Next song: VOL+ long press for 2 seconds Telephone control: Answer the call: Short press MFB when calling Refuse to answer the phone: press MFB when calling Redial without number: double-click the MFB button, then short press MFB to cancel the dial-out Led light shows: Boot pairing: red and blue lights alternately flash Connection status: blue light flashes slowly (5 seconds 1 time) Low voltage: red light flashes (0.5 seconds 1 time) Working current: Status Parameter (4.00V) Parameter (3.40V) Working rated voltage 4.00V 3.40V Pairing state current 4.33mA-20.56mA 4.47mA-22.03mA Standby current (Bluetooth connected) 0.43mA-8.31mA 0.41mA-8.74mA Play music current 19.04mA-23.21mA 22.85mA-23.74mA Call current 23.82mA-24.05mA 25.19mA-25.78mA Charging current 100.0mA. 100.0mA Shutdown current 1.4uA 1.1uA This Bluetooth noise reduction answering, support any key answering, effective connection with the smart phone, automatic matching connection program, charging to maintain the connection state. Isolated voice, HD call: The sound frequency is recognized by the intelligent control chip, and the reverse signal is generated to filter out external noise (noise and wind) in the non-human frequency range. BUYING: PLEASE CHOOSE QUANTITY NEEDED. PLEASE REFER TO PICTURES FOR DETAILS. CONDITION: BRAND NEW. DIMENSIONS: PLEASE REFER TO ABOVE & PHOTOS DETAILS, SPECS, OR FEATURES: PLEASE REFER TO PHOTOS DETAILS ABOVE.