Feature:1. Application: Using the Bluetooth cassette adapter, your cassette recorder instantly becomes the Bluetooth wireless cassette player in your car or home.2. Wireless: Stream music from any Bluetooth device (such as mobile phones, tablets, etc.) without complicated settings, no cables, no tangled tapes.3. Charging: The second generation cassette adapter contains a long lasting rechargeable battery.4. Practical: The Bluetooth cassette adapter is the last cassette you need, as well as your favorite music, and audiobooks in your car.5. Convenient: Great for music lovers who want to continue using their favorite cassette tapes while also enjoying the convenience of modern technology.Specification:Item Type: Cassette Player AdapterMaterial: ABSColor: BlackWeight: Approx. 73g / 2.6ozProduct Size: Approx. 10x6.3x0.8cm / 3.9x2.5x0.3inFormat: MP3, SBC, StereoSupport Bluetooth: Bluetooth 5.0Two Indicator Lights: Blue, RedTransmission Distance: About 10m / 32.8ftBattery: Built in 140mAh Li BatteryCharging Current: 80mAPairing Current: 8mAStandby Current: 2mAPlay Music and Call Current: 30mAWorking Voltage: 3.3-4.2V.Package List:1 x Cassette Player Adapter1 x USB Data Cable