?12 Months Warranty?: Our wireless mouse and keyboard combo provide 12 months warranty, even after the return period, if you have any questions, you can write to our after-sales email, we will reply you within 24 hrs and help you until solve all questions. ?3 Adjustable DPI Wireless Mouse?: This is a optical wireless mouse with 3 levels adjustable DPI(1000/1600/2400)to meet your different needs in terms of sensitivity by adjusting the DPI button. Optical wireless mouse also can smooth movement even on smooth surfaces. In addition, this wireless mouse is symmetry design, no matter you are Right handed Left handed, both hands are available, suitable for all people. ?Splash-Proof Design Keyboard?: ABS injection molded, stable structure, non-toxic and odorless. Light matte surface treatment technology cares for your fingertips. The panel has built-in a waterproof conductive membrane and multiple drainage holes for double protection. Just shake the keyboard, and the liquid can be smoothly drained out. From now on, you don't need to worry about worry about your keyboard getting wet. ?Automatic Power Saving Function?: The wireless keyboard and mouse combo has the function of automatically entering the power-saving state, when you stop using the keyboard more than 5 minutes, stop using the mouse more than 2 minutes, they will auto-enter sleep mode respectively to save power. This feature greatly extends the battery life, you can click any button to activity the device. ?2.4G Stable Wireless Connection?: No need to install any drivers, E-YOOSO wireless keyboard and mouse combo use 2.4G wireless connection technology, stable and powerful connection up to 10m (33 feet), just plug and play, one USB Receiver can connect both the keyboard and mouse, can also be used separately. (The USB Receiver is Stored on the back of the Mouse). ?Comfortable Wireless Keyboard Mouse Combo?: The wireless keyboard mouse combo has a comfortable touch and typing feel, and keyboard design with palm rest and folding holder, every detail is carefully crafted to fit your hand fully. The stripe design on the side of the mouse can prevent it from slipping off when your palms sweat.