Features: BT Audio Receiver: Loop R8 changes the traditional headphones and speakers into BT-enabled ones. After paired, play music wirelessly from your BT-enabled Smart Phones, Tablet and more without the hassle of cables. Advanced BT 4.1: Wireless 4.1 technology ensures transmitting strong signal in high quality and high speed. BT range reaches up to 10 meters in open space without obstacles. Hands-free call Multi-pairing: With built-in microphone, it enables hands-free calls to ensure driving safety. Multi-point connection function ensures to seamlessly switch between your business and personal phones. Strong Compatibility: Compatible with Android and iOS smart phones, tablet pc and more BT-enabled audio devices. 3.5mm audio port design, suitable for headphone, speaker and other Stereo System with 3.5mm port. Low Power Consumption: Built-in 180mAh Battery ensures up to 8 hours working time, you can enjoy wireless free all day long. Simple use, no need to download any APP. Compact and portable with back clip, convenient to use.