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 Adapter Material: ABS Color: Black Weight: Approx. 73g / 2.6oz Product Size: Approx. 10x6.3x0.8cm / 3.9x2.5x0.3in Format: MP3, SBC, Stereo Support Bluetooth: Bluetooth 5.0 Two Indicator Lights: Blue, Red Transmission Distance: About 10m / 32.8ft Battery: Built in 140mAh Li Battery Charging Current: 80mA Pairing Current: 8mA Standby Current: 2mA Play Music and Call Current: 30mA Working Voltage: 3.3-4.2V . Package List: 1 x Cassette Player Adapter1 x USB Data Cable