DescriptionA good wireless audio adapter is necessary in your daily life. Thiswireless 5.0 audio receiver is small and lightweight whichis convenient for you to carry.Very easy and convenient to connect andoperate, practical and durable.Features- Color: Black - Material: Metal, ABS - Size: About 3.20X1.70X0.85cm/1.26X0.67X0.33in - Use Distance: 10M. - Transmission Rate:24 (Mbps)- Operating Frequency: (2.4 MHz)- Made from premium metal, ABS material, durable to use. - Easy to use, suitable for a variety of equipment. - USB/AUX dual output module, plug and play without charging. - USB mode does not require the use of a 3.5 audio cable. Plug directly into USB interface of car or speaker, and can be used directly after pairing with mobile phone. - Built-in microphone, when the phone is talking, it can make a hands-free call through the microphone on the KN318.