Tape design with strong Bluetooth-compatible function, you can insert the cassette into the car cassette player, then connect it with your phone Bluetooth, enjoy the music and hands-free freely and instantly.<br> Built-in microphone, the tape converter supports hands-free calling, easy to or end a call with one-key. You 't need to hold the phone while driving or walking in the way.<br> Adopt the latest 5.0 Bluetooth-compatible chip, provides more stable performance, steadier and better calling quality, compatibility and stronger functions, supporting you clear, long lasting and continuous phone call and stereo music.<br> The cassette has USB ports and built-in 130mAh rechargeable battery, safe and durable, you can charge the lamp anytime by connecting with power bank, laptop or other kinds of USB adaptor, convenient to use.<br> Suitable for placing in the car, auto and vehicle to enjoy music, hands-free calling and other Bluetooth-compatible functions.<br> <br> Bluetooth-compatible version: 5.0<br> Power supply: USB<br> Battery: built in 130mAh rechargeable battery<br> Size: 10 x 6.3 x 0.7cm/3.93 x 2.48 x 0.27inch<br> Weight: 62g<br> color:Black<br> Material:ABS<br> <br> Package Contents:<br> 1 x cassette adapter<br> 1 x USB cable<br> <br> Only the above package content, other products are not included.<br> Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.