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> <br>Built-in microphone, the tape converter supports hands-free calling, easy to answer or end a call with one-key. You don't need to hold the phone while driving or walking in the way. <br> <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> <br>The cassette has USB ports and built-in 130mAh rechargeable battery, safe and , you can charge the lamp anytime by connecting with power bank, laptop or other kinds of USB adaptor, convenient to use. <br> <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> <br>Power supply: USB <br> <br>Battery: built in 130mAh rechargeable battery <br> <br>Size: 10 x 6.3 x 0.7cm/3.93 x 2.48 x 0.27inch <br> <br>Weight: 62g <br> <br>color:Black <br> <br>Material:ABS <br> <br>Package Contents: <br> <br>1 x cassette adapter <br> <br>1 x USB cable <br> <br>Only the above package content, other products are not included. <br> <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.