Feature:1. [Multifunction] With this tape adapter, you can answer calls or control music on the receiver, change the volume, play, pause, skip music, and have a long playing time.2. [Compatible] The cassette adapter supports all mobile phones, tablets, MP3 players, car stereos, headsets, or other devices equipped with standard Bluetooth technology.3. [Stereo] Smart design creates a secure connection, double shielding, polished metal, and corrosion-resistant gold-plated contacts, high fidelity, seamless transmission of stereo sound.4. [Good Performance] Every small component of the tape aux receiver has been tested thousands of times, intelligent noise reduction, to ensure reliable performance and minimal signal loss.5. [Easy to Use] This cassette adapter allows you to continue enjoying the music on your phone without changing or modifying your car, it is simple without cables, with stable and fast transmission.Specification:Item Type: Cassette AdapterMaterial: ABSTape Size: Approx. 10 x 6.4 x 1 cm / 3.9 x 2.5 x 0.4 inColor: BlackBattery: Lithium Battery Capacity: 300mAhBluetooth: 5.0Parameter:Supports all mobile phones, tablets, car speakers, or other devices equipped with standard Bluetooth technologyIdeal for home or car speaker systemsHigh fidelity sound, long playing time, stable and fast transmission, no cable, simple.Package List:1 x Cassette Adapter1 x USB Power CableNote:Manual measurement, please allow 0.4–0.7 inch error.