This product is a USB audio adapter, which is made of durable electronic components and ABS material, with good texture, safe and practical. Easy to install and use, it can be easily applied to your audio devices. It is a very practical accessory that will meet your needs well. Features -Color: Black -Material: ABS, electronic components -Size: 4.10X2.00X1.00cm/1.61X0.79X0.39in Version: 5.0 Operating range: up to 10m / 33ft Transmission mode: red indicator light Receiving method: blue light - Long-distance transmission, built-in antenna, enhanced wireless signal, to achieve a large range of signal coverage. - This USB audio adapter is perfect for watching video, listening to music, playing games, and etc. - After the first pairing is successful, the computer will automatically connect to the wireless device when it is turned on. - Real-time audio sync with low latency, let you enjoy great gaming experience. - It is manufactured with professional technology to ensure the product and can work for a long time. Package list: 2 x wireless adapter 2 x 3.5mm cable 2 x manual