Features: 1. Hands-free phone calling 2. Cell phone can be connected automatically when the device turns on.3. Noise and wind suppressed by CVC technology to create full duplex sound quality.4. Support mobile's A2DP function. Music will be played directly while mobile phone is connected via Bluetooth. 5. Support external TF card or USB flash disk, can play music files in MP3/WMA format. 6. 1.44 inch LCD screen displays the voltage of car battery level, frequency and manual optional items.Specifications: Working Voltage: 12V~24VOutput Current: 3.1A(dual USB port)Output Voltage: DC 5VFM Frequency: 87.5~108MHzBluetooth Function: Bluetooth V4.1 Bluetooth Connect Distances: 10mSupport TF Card/U Disk: 512MB-32GBUsage steps : 1.Plug the device into the car cigarette lighter hole to power on.2.On LCD screen, displays car battery voltage for seconds and with voice prompt : car battery voltage normal (or abnormal).3.After voltage display,screen will shows frequency and Bluetooth LOGO icon with flickering . With voice prompt : Bluetooth is ready to pair.4.Open the Bluetooth on your phone and search the device with name of HY88, after connected successfully, Bluetooth LOGO icon stop flicker. You can use Bluetooth to play music.5.To use device music playing function, turn on the car FM radio , choose a clear channel, make sure the car radio channel is clear to avoid interference by local radio signal.6.Long press the answer key button until the frequency display flicker, rotate it to adjust the FM frequency to match the car radio FM channel.Insert the USB or TF card, device will start to play automatically. Note: - Only support AUX output!!- Please change another stable channel if there is a lot of static because of frequency conflict.- Please press the knob to adjust the channel when the screen displays the
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