USAMS US-SJ464 Wireless Bluetooth Adapter Receiver Car Aux Audio Receiver Gold-Plated 3.5mm Connector Bluetooth 5.0 transmission for better compatibility, stability, and response speed 3.5mm plug connects to non-Bluetooth cars and audio equipment via the AUX interface, enabling Bluetooth functionality Signal transmission through the AUX port is more stable, faster, and simpler compared to FM Bluetooth transmitters Features a 1.5-meter spring cable for convenient storage and use (unstretched length: 38cm) Supports hands-free calls to enhance driving safety; built-in high-definition noise reduction microphone ensures clear incoming calls with no echo Line-of-sight transmission range up to 5 meters Powered via USB for continuous use without battery limitations Gold-plated 3.5mm plug resists oxidation and improves audio quality Memory pairing function: after initial setup, automatically reconnects when powered on Specifications: Brand: USAMS Model: US-SJ464 Material: Aluminum alloy + ABS Output Interface: 3.5mm Bluetooth Version: 5.0 Transmission Distance: 5 meters (line of sight) Cable Length: 38cm unstretched, 150cm stretched Package Included: 1 x USAMS Wireless Bluetooth Adapter Receiver 1 x User Manual (English)