Cassette design with strong Bluetooth compatible function, you can insert the cassette into the car cassette player, then connect it to your phone Bluetooth, enjoy the music and handsfree freely and directly.Builtin microphone, the cassette converter supports handsfree calling, easy to receive or end a call with one touch. No need to hold the phone while driving or walking on the road.Adopt the latest 5.0 Bluetooth compatible chip, provides more stable performance, steadier and better call quality, wider compatibility and stronger functions, supports you clear, longlasting and continuous phone call and stereo music.The cassette has USB ports and builtin 130mAh rechargeable battery, safe and durable, you can charge the lamp at any time by connecting to power bank, laptop or other types of USB adapter, convenient to use.Suitable for placing in the car, automobile and vehicle to enjoy music, handsfree calls and other Bluetooth compatible functions.Bluetooth compatible version 5.0Power supply USBBattery builtin 130mAh rechargeable batterySize 106.30.7 cm3.932.480.27 inchWeight 62gColor BlackMaterial ABSPackage contents1cassette adapter1USB cableOnly the above package contents, other products are not included.Note Light reflection and different displays may cause the color of the item in the picture to be slightly different from the real thing. The allowable measurement error is13 cm.