Features: 5.0 BLUETOOTH COMPATIBLE5.0 Bluetooth compatible, no delay, stability and response speed are good. 10 meters in a straight line without obstacles STRONG COMPATIBILITYUSB input and 3.5mm Jack output, it supports connection to mobile phones, laptop and tablet, amplifiers, stereos, headphones, car audio. HD CALLSupports loudspeaker calls, making it safer to drive with hands free. It is built-in high-definition noise reduction microphone, calls are clear and no echo. PLUG AND PLAYUSB direct power supply, no need to worry about insufficient power and battery life. Connect signal via AUX, plug and play, simple connection. STRETCHY CABLEMade of TPE material, which can be stretched freely without deformation, from 0.3m/11.81inch to 1.13m/44.49inch. It prevents tangles and is easy to store. Specifications: Color: black Material: TPE+ABS+zinc alloy Bluetooth version: 5.0 Transmission distance: 10m Input connector : USB Output connector : 3.5mm Jack Unstretched length: about 0.3m/11.81inch Stretched length: about 1.13m/44.49inch Package Includes: 1pc x Bluetooth receiver Note: 1. Due to the light and screen difference, the item's color may be slightly different from the pictures. 2. Please allow 0.5-2 cm differences due to manual measurement.