Feature:1. 2. The built-in microphone can support ringing function without delay in making and receiving calls. 3. Adapter cassette with LED indicator charging USB is convenient for charging. 4. Adapter control button boxes can be easily controlled manually, easy to operate. 5. Tape converter with bluetooth 5.0 technology allows you to conveniently play music on your smartphone za via bluetooth connection. . Adapter for Bluetooth cassettes Tape converter Specifications: Item Type: Car adapter Bluetooth Cassette Material: ABS plastic Kolor: black Product Size: approx. 10x6,4x0,9 cm / 3,9x2,5x0,4 inch (there was an error caused by manual measurement) Bluetooth Receiving/Connecting: Support Format audio: AAC, MP3, for SBC, stereo Bluetooth support: 5.0 EDR Indicator light: blue, red Transmission distance: approx. 10 m / 32,8 feet Built-in battery: 140 mAh lithium battery Charging Current: 80mA Operating Voltage: 3,3-4,2 V Charging Input Voltage: 4,5 V-5,3 V Output Mode: Bluetooth . Adapter for Bluetooth cassettes Tape converter How to use: Simply connect the adapter cassette to the CD player in your car. . Adapter for Bluetooth cassettes Tape converter Package list:1 x Adapter for cassette 1 x Charging Cable 1 x Manual . Adapter for Bluetooth cassettes Tape converter