Easy to Use Universal 3.5mm audio jack design Built-in mic for hands-free calling Multi-function button for Play/Pause and one-touch answering “+”/ “-“ button for volume adjustment and Next/ Previous track Small & Portable Dimension: 2.4in x 1.5in This Bluetooth AUX adapter is small and lightweight, which makes it very easy to carry. You can take it anywhere for enjoying wireless music! Battery Indicator Once the wireless receiver has successfully paired with the phone, its power will be displayed on the phone to know its usage time. (PS: Most Android phones will display the battery percentage on the Bluetooth connected device interface of the phone.) NOTE: After the battery is over-discharged, the red light may not light up in the first 10S of charging, please observe whether the light is on after at least 10S charging. J22-Bluetooth Car Receiver (gray) COMSOON Bluetooth AUX Adapter for Car, Noise Reduction Bluetooth Receiver for... [Upgraded] COMSOON Bluetooth FM Transmitter for Car, Bluetooth Car Adapter MP... COMSOON AUX Bluetooth Adapter for Car, [LED Screen] Bluetooth 5.3 Receiver fo... COMSOON Bluetooth 5.3 Receiver for Car, [Enlarged Button & LED Display Screen... Add to Cart Add to Cart Add to Cart Add to Cart Add to Cart Customer Reviews 4.5 out of 5 stars 5,690 4.5 out of 5 stars 5,690 4.4 out of 5 stars 3,401 4.3 out of 5 stars 455 4.3 out of 5 stars 32 Price $16.99$16.99 $16.99$16.99 $14.99$14.99 $16.99$16.99 $16.99$16.99 Bluetooth Version V5.3 Bluetooth Version V5.3 Bluetooth Version V5.3 Bluetooth Version V5.3 Bluetooth Version V5.3 Bluetooth Version V5.3 Music Play Modes Bluetooth Bluetooth Bluetooth Bluetooth Bluetooth Ring Light Blue Ring Light Blue Ring Light Blue Ring Light Blue Ring Light Blue Ring Light Screen Screen Screen Screen Screen Screen Power on/off Button MFB MFB no data no data MFB