Tape design with strong Bluetooth compatible function, you can insert the cassette into the car cassette player and then connect it to your phones Bluetooth, enjoy the music and handsfree freely and instantly. Builtin microphone, the tape converter supports handsfree calling, easy to answer or end a call with one touch. You dont need to hold the phone while driving or walking. Using the latest 5.0 Bluetooth compatible chip, provides more stable performance, smoother and better call quality, compatibility and stronger functions, supporting you with clear, longlasting and continuous phone calls 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 adapters, convenient to use. Suitable for placing in the car, automobile and vehicle to enjoy music, handsfree calling and other Bluetooth compatible functions. Bluetooth compatible version 5.0 Power supply USB Battery builtin 130mAh rechargeable battery Size 10 6.3 0.7cm3.93 2.48 0.27inch Weight 62g Color Black Material ABS Package Contents 1 Cassette Adapter 1 USB Cable The above package content only, other products are not included. 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 13cm.