Features:Mini receiverSlip battery coverWide wheelMove freely in 10 meter's areaErgonomic battery cover design, easy to operate.Powered by 2 x AAA batteries (Battery NOT included)With LED indicator. When it is folded,it sleeps to stop working. When unfolded, it continues to work. Battery status indicator:If battery is in low power, the indicator will be red. Computer Connection: Wirele Wirele transmiion frequency: 2.4GHzType: Optical MouseOptical Resolution: 1200 (dpi)Key number: 3 (key)Supports OS:Windows 2000/ Vista / Win7 / Win8 Applicable models: desktop, laptop 1,We are pure-heart seller and our goal is 5 STARS.We hope to provide you with the best products and best service,And strive for 100% customer satisfaction!2,When you receive the product, if you are satisfied with this product,Please kindly leave us positive feedback, we will try our best to do better.3,If you have any problem with the item,Please do contact us in advance before leaving any negative/neutral feedback.we can always try our best to Provide a good solution.so that we can satisfactorily addre your concerns.4,Good communcation is important for us. We are for sure can make it a succeful transaction for you. It is impoible to addre iues if we do not know about them! Long battery life: Thanks to energy-saving engineering, the battery replacement interval can reach 18 months, and the silent mouse automatically goes to sleep when not in use to save battery life Universal design for both left and right hands: This wireless mouse is ergonomically designed, more comfortable and precise than a touchpad, suitable for left-handed and right-handed users, and small enough to be carried in a bag Vivid color options: Personalize your workspace with the eye-catching colors of this wireless mouse, adding a touch of style to your desk. Portable and durable - The USB receiver plugs into a PC USB port and can be conveniently stored inside the wireless mouse when not in use. Perfect for work and play at home or in the office.