[Bluetooth 5.0 Adapter]: Bluetooth 5.0 improves audio transmission speed, enabling seamless music playback with low latency and high sound quality. It also extends effective range for calls up to 10 meters to meet daily needs. [Hands-Free Calling and Audio Streaming]: Bluetooth car adapter with built-in microphone and one-touch multifunction button for answering, ending, rejecting, or redialing calls. Connect the 3.5mm AUX dongle to your car’s AUX jack and pair your phone to stream calls, music, and voice navigation prompts through your car’s audio system. [CVC 8.0 Noise Cancellation]: Equipped with CVC 8.0 noise cancellation technology to reduce echo and suppress background noise—including wind, traffic, and crowd sounds—for clear voice communication and enhanced audio playback. [Dual Device Connection]: Supports simultaneous pairing with two devices. Automatically reconnects to the last paired device when in range, allowing uninterrupted music playback while staying available for incoming calls. [Package Contents]: 1 x Bluetooth adapter, 1 x 3.5mm audio cable, 1 x charging cable, 1 x 3.5mm audio plug, 1 x user manual (English). Color: Black Material: Metal + Plastic Note: Color may vary slightly due to screen settings and lighting conditions. Measurement tolerance: ±1–3 cm.