Usage Tips:Feature 1Application: Using the Bluetooth cassette adapter, your cassette recorder instantly becomes the Bluetooth wireless cassette player in your car or home. 2Wireless: Stream music from any Bluetooth device (such as mobile phones, tablets, etc.) without complicated settings, no cables, no tangled tapes. 3Charging: The second generation cassette adapter contains a long lasting rechargeable battery, you can enjoy music while charging. 4Convenient: The switch and microphone button can be hung outside your recorder, both hands can be safely held on the steering wheel. 5Practical: The Bluetooth cassette adapter is the last cassette you need, as well as your favorite music, and audiobooks in your car.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 Lithium BatteryCharging Current: 80mAPairing Current: 8mAStandby Current: 2mAPlay Music and Call Current: 30mAWorking Voltage: 3.3-4.2V .wang-edit-text{ font-family:'Arial' important; } .wang-edit-text table { border-top: 1px solid 000; border-left: 1px solid 000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid 000; border-right: 1px solid 000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x Cassette Player Adapter1 x USB Data Cable