Welcome to the store! Size: 3.9x3x1.2 inches, mini-size USB speaker, saves space, gives you a tidy desktop It is compatible with USB1.1, USB 2.0. Just plug the USB cable into your computer and you don't need a 3.5mm connection. Two stereo speakers can achieve a balanced sound effect, pure and stereo, and put together to stand on the desktop Immerse yourself in the rich sound of music, movies, and games as this speaker is integrated with dual speaker units delivering amazing stereo sound. Please note: It has no volume control. Perfect for your home, your office, school and any other places, also a perfect gift for your friend and your family. Your satisfaction is our top priority. We will provide you with the best service. If you find any problems after receiving the product, such as damage, incorrect quantity, etc., please contact us immediately and we will give you the best solution!