Universal Cassette Bluetooth 5.0 Audio Car Tape Aux Stereo Adapter with Mic for Phone MP3 Player Tape design with strong Bluetooth functionality. Insert the cassette into your car cassette player and connect it to your phone via Bluetooth to enjoy music and hands-free calling instantly. Built-in microphone supports hands-free calling. Easily answer or end calls with one button. No need to hold your phone while driving. Features the latest Bluetooth 5.0 chip for stable performance, improved call quality, wider compatibility, and enhanced functionality. Enjoy clear, long-lasting, and continuous stereo music and phone calls. The cassette adapter includes a USB port and a built-in 130mAh rechargeable battery. Safe and durable design. Charge conveniently using a power bank, laptop, or any standard USB adapter. Ideal for use in cars and vehicles to enjoy music, hands-free calling, and other Bluetooth functions. Bluetooth Version: 5.0 Power Supply: USB Battery: Built-in 130mAh rechargeable battery Size: 10 x 6.3 x 0.7cm / 3.93 x 2.48 x 0.27inch Weight: 62g Color: Black (ABS material) Package Contents: 1 x Cassette Adapter 1 x USB Cable Note: Light reflection and different displays may cause slight color variation from the actual item. Measurement error allowed is +/- 1-3cm.