128-bit aes keyboard encryption helps keep your information secure, wireless range may vary due to environmental and computing conditions , A 24 month keyboard and 5 month mouse battery life plus auto-sleep meaning you can watch youtube videos, catch up on facebook and explore for months without the hassle of changing batteries but battery life may vary based on user and computing conditions , The keyboard's minimalist design not only blends in beautifully with your décor but serves a purpose as no extra space between the keys makes it compact as well as sleek