"Description :With the Bluetooth Cassette Adapter, your cassette player instantly becomes a wireless Bluetooth cassette player for your car or home. Stream music from any Bluetooth device such as your phone, tablet, etc., no complicated setup, no cables, no tangled tape. The 2nd Generation Bluetooth Cassette Adapter contains a long-lasting rechargeable battery, you can enjoy music while charging, as the charging port, on/off switch and microphone button can be hung outside of your game strip. Both of your hands stay safe on the wheel while your audio source stays in your pocket. The Bluetooth Cassette Adapter is the last cassette you'll ever need and the first and only step to bringing your favorite music, podcasts, and audiobooks to your car.How to use: 1. Please hold the power switch (on/off) for several seconds to put into pairing mode. 2. The Bluetooth Cassette will start flashing blue/red, which means it has entered pairing mode. 3. Now go to your Bluetooth setting on your device and select "zhx-088" to pair. 4. After pairing success, the blue light flashes once every 5 seconds. 5. Then insert the iTape into your cassette player, press play on your cassette player. 6. Select music on your device and enjoy wireless music. Features: Material: ABS. Colour: black. Dimensions: approximately 10 x 6.3 x 0.8 cm. Audio format: AAC, MP3, SBC, stereo, Bluetooth support: Bluetooth 5.0. Two indicator lights: blue, red. Transfer distance: about 10m. Battery: Built-in 140mAh battery. Charging current: 80mA. Coupling current: 8mA. Standby current: 2mA. Playing music and making calls: 30mA. Working voltage: 3.3-4.2V. Contents: 1 cassette player adapter. 1 USB cable. 1 user manual.