This Microsoft Wireless Comfort Keyboard 4000 # 1045 is an ergonomic keyboard that is perfect for those who want a comfortable typing experience. The keyboard is made of plastic and has a QWERTY (Standard) layout. It is a wireless keyboard that does not require a dongle and has a maximum DPI of 4000. The keyboard features an ergonomic design and is manufactured in China. It comes with a 5-year manufacturer warranty and has no custom bundles. The keyboard is gray in color and has English as the keyboard language. This keyboard is perfect for those who want a comfortable typing experience and is ideal for use with computers, tablets, and networking devices.