ZDMEI Black Cordless USB Receiver Wireless 2.4G Optical Mouse High accuracy and reliability .2.4GHz wireless transmission up to 8M-10M operating distance 6-month battery life on 1 AA battery (battery NOT included) Battery life may vary based on user and computing conditions. This little mouse is perfect for travel and works well on my Mac and PC laptops. It's very easy to use has a nice scroll feature and goes on like a stand by mode when your not using it to save the batteries. Compatible with Window 98/2000/NT/ME/XP/win7/Win8; No driver needed, plug and play. ZDMEI by a 180 days warranty