Features:OOTDTY0.3-1.2 meters of spring wire, the wire is made of high TPE material, which can be stretched freely without deformation, anti-winding and not mey, convenient for storage and use.Gold-plated 3.5mm plug + enameled wire , not afraid of oxidation, but also improve the sound quality.Remember the connection, after the first connection, the next for time it is turned on, it will be automatically paired andSupport hands-free calls, release your hands to make driving safer. Built-in high-definition noise reduction microphone, incoming calls are clear and echo-free.The anti-current circuit design effectively isolates the squeak caused by the current, making the sound quality moreThe barrier-free linear transmiion is 10 meters.The signal transmiion through the AUX port connection is more stable, faster, and the Bluetooth-compatible connection is simpler.USB is directly powered, so there is no need to worry about insufficient power and battery life.brand new and high qualityBluetooth-compatible 5.1 version, compatibility, stability, and response speed are better than the previous version.The 3.5mm can be to non-Bluetooth car and equipment such as sound effects through the AUX to make it have Bluetooth-compatible function.Specifications:Product name: Bluetooth-compatible receiverOutput : 3.5mm/USBBluetooth-compatible version: 5.1Transmiion distance: 10 meters without barriersLine length: unstretched 30cm/11.81in, stretched 120cm/47.24inPackage Includes:1 x Transmitter ReceiverNote:Due to the difference and light effect, the actual color of the item may be slightly different from the color shown on the pictures. Thanks!Please allow 1-2cm measuring deviation due to manual measurement.