This wired Keyboard features 3 rainbow-color backlights, 4 adjustable brightness, and breathing modes. The wired mouse has 4 switchable lighting effects (red/blue/green/purple). Light-up keycaps help you to use it more easily in low light. This wired keyboard mouse combo is very suitable for medium to large-sized hands. The full-size ergo wired keyboard creates a comfortable typing experience and reduces wrist stress thanks to the palm rest and folding legs. The big mouse features a perfect grip angle, and premium matte finish, providing complete comfort and reducing hand muscle fatigue.