Check the listing for details. 2.4GHZ OPTICAL WIRELESS SLIM MOUSE MICE + USB RECEIVER FOR LAPTOP PC MACBOOK. Color: Black, Condition: New. Listed at 7.99 USD. Slim 2.4 GHz Optical Wireless MouseFeature: 100% brand new and high quality 2.4GHz Wireless Optical Mouse Elegant, Ultra Slim, Comfortable Grip Switch Life: 5 million cycle 3 Buttons with scroll wheel Scroll easily in any direction Nano Mini Receiver hidden in the Mouse Bottom Built-in Energy Saving system. Wireless Technology works on most surfaces Wireless carrier frequency: 2402MHz-2480MHz 16 wireless working channels, automatic frequency jumping Mini Receiver can be contained and easy to carry Maximum acceleration: 14 inches per second Effective: 2.4GHz wireless transmission up to10 meters operating distance Intelligent connectivity, No Need to Code, Plug & Play Size:115 x 60 x 20mm Power: 2 x AAA Batteries(Not Included) Current: 1.5mA 1.5V Weight: about 65g How to use: Step1: Open the Battery Cover(Underneath the Mouse), Install 2pcs Alkaline AAA Batteries Step2: Take out the USB Nano Dongle, and close the Battery Cover Step3: Plug the USB Nano Dongle in the USB Port Step4: Then the mouse will connect with the dongle automatically and start working.----------------------------------------------------------------------------------------------------------------------------------------------------2.4G USB Wireless Mouse Vertical Ergonomic Description:Wireless function: The integrated 2.4GHz wireless radio frequency technology allows the mouse to function without problems with the computer or laptop (Note: the USB receiver is located at the bottom of the mouse). Ergonomic design: ergonomic vertical mouse allows a more comfortable movement and less effort, Prevents Carpal Tunnel Disorder (RSI Syndrome), ideal for people who work daily and for a long time with the computer surfing the Internet.6 Buttons: 5 buttons and scroll wheel, left and right mouse button that the forward and backward button provides maximum comfort in surfing the Internet, easy-to-control keys and scroll wheel.Compatible: Windows 7, 8, 10, Windows XP, Vista, Me, 2000 and Mac OS, or more recently system.Power Supply: Chargeable Battery Features:The Wireless Vertical Optical Mouse is designed to reduce forearm torsion and joint pain due to repeated stress.Simplicity plug and play: No software, no inconvenience: simply connect the Nano receiver and the mouse is immediately ready for use.Wireless receiver: The small wireless receiver can remain inserted in the notebook even when carrying it. Product Include1 x 2.4GHz USB Optical Wireless Mouse & USB Receiver 1 x Vertical Ergonomic Mouse