Green up your life! ECO-8100 Colorful A simple way to live an ECO life. Save time, money and the earth. Rechargeable battery without breaking Wireless and rechargeable, you can have your office work anywhere without any breaking. Keep the Earth Green With rechargeable battery included, never spend money on batteries and keep the earth green. Tracks anywhere The wireless mouse can work on any surface, including glass dining table, car leather surface, even on your jeans. Scroll-n-Zoom App to customize your device for best performance and high productivity.