Wireless Keyboard Mouse Combos: 1. Laser engraving characters are more environmentally friendly and wear-resistant than silk print characters; two Non – slip mats on the back. 2. Spill-resistant design handles the unplanned coffee or beverage spill letting you drink and snack without worry 3. Ergonomic design, compact and comfortable to use. 4. Durable keys withstand up to 10 million keystrokes. 5. LED Indicator when there no power of the battery, the indicator will be red.