Full-size keyboard with whisper-quiet Incurve Keys™. Concave, softly rounded keys position your fingers properly for typing. Full-size mouse is designed for comfort. Offers a contoured design with soft rubber side grips, for use with either hand. Mouse navigates smoothly on most surfaces due to its precise laser tracking. Convenient wireless connectivity helps eliminate cord clutter. Advanced 2.4GHz wireless connectivity gives you the reliability of a cord, with virtually no delays or dropouts, and wireless encryption for enhanced security. Unifying receiver is small enough to stay in your computer during travel. Works with both keyboard and mouse. Power management provides up to 3 years of battery life for the keyboard and up to 1 year for the mouse. Battery life will vary depending on the product configuration, product model, applications loaded on the product, power management setting of the product and the product features used by the customer. As with all batteries, the maximum capacity of this battery will decrease with time and usage.