[Full-Size and 3 Adjustable DPI Keyboard Mouse Combo]--The KUT027 Wireless Keyboard and Mouse Combo include a full-size keyboard and a precision mouse. Comfortable, quiet typing on a familiar keyboard layout. The mouse with 3 DPI levels (800/1200/1600) Optical tracking technology, you can easily adjust the sensitivity of the mouse between the 3 DPI levels. Just one usb receiver can connect both keyboard and mouse. [Stable 2.4G Wireless Connection]--Plug and play with simple mini USB receiver(Wireless transmission distance can up to 32.8ft ). 2.4GHz wireless technology - provides automatic frequency recognition and stable signal with no delay. cut the cord and enjoy the freedom. [Ergonomic Design and Wera-Ressistant Touch]:--High-end scissors switch keyboards for comfortable touch and precise control of typing. quick response.High quality ABS material of surface and galvanized plate on the bottom ensures durable touch feeling.The letters and numbers on the keyboard are friction and abrasion resistant. [A Ultra-Thin Silione Keyboard Cover]--High transparency to preserve the elegance of your keyboard. Soft durable ultra-thin silicone keyboard cover to ensure comfortable usage while typing. It provides perfectly protect for the keyboard. Waterproof and Dustproof. [Wide Compatibility]--Compatible with Windows 2000, XP, Vista, Win 7, Win 8, and Win 10(Note: Multimedia keys may not fully compatible with Mac, OS System). Having JElly COMB brand protection and a free one-year replacement warranty. The keyboard and mouse separately need 2 x AAA batteries (not included).