They have the best performance. Resolution Optical 800 / 1200 / 1600 DPI Resolution Optical Tracking Technology provides more sensitivity than standard optical mice for smooth and precise tracking on a wide range of surfaces. Ergonomic Design The perfect ergonomic contours design provide all day comfortable even after long hours using. Also the iron man shape design and the led blue light can be switched ON/OFF by the switch button at the bottom which can bring you cool feeling. Compatible with Compatible with Windows XP, Vista, 7, 8, 8.1,10 and Linux. Works with Notebook, Chromebook, PC, Laptop, Computer, and more.(batteries are NOT included) They are incredibly cool. Cool Stylish Design Mikayoo Cool mouse with stylish design can be used to provide good support and gaming experience. It is domineering when Gaming match. The Nano receiver can be stored in the back of the Ergonomic Wireless Mouse 2.4GHz Wireless Mouse Ensures reliable connection with an increased working distance of up to 15m and eliminates delays, dropouts and interference.（USB receiver hidden in the battery compartment） Quite Click and Care For the Ear Portable Mobile Computer Mouse Optical Mice Quiet click sound when pressing buttons,Special design allows you to play the game more feeling. Low Energy Consumption Auto Power Off (APO) for energy saving. The USB Wireless Mouse will be switched off automatically when the Nano Receiver is disconnected, or the PC is power off. Three Colors, Black, Silver, Gold Wireless Computer Mouse 2.4G Full Size Wireless Optical Gaming Mice with Nano USB Receiver A Mikayoo Iran Man Wireless Mouse takes you far away from the everyday. All the way to your happy place. Lasts up to 3 months on 2 batteries. Responds up to 50 ft. with a nano wireless receiver. Rips through web pages and docs with precision scrolling. Plug and Play: No additional software or driver installation is needed, wherever you go, just simply plug in the tiny nano receiver and start using your mouse right away. 2.4 G wireless transmission technology: Enjoy the fast data transfer at the convenience of wireless technology 100 millions clicks Life: Split design with100 million times longer using life Compatibility: Windows 10 / 8 / 7 / Vista / XP / 2000 Linux Mac OS X system etc. Wireless rated voltage: 3.0 V Battery: 2 * AAA (not included) Marvel Mouse operation instructions: 1. Open the battery warehouse, load 2*AAA batteries, remove the USB receiver in the battery warehouse, cover the battery warehouse, and enter the boot mode. 2. Insert the USB receiver into the computer's free USB port. The first time you install the computer, you will be prompted to find an available USB device, and it will be installed automatically. You can use the mouse normally. 3. When the mouse is not operated for 3 minutes, it will automatically enter the standby state. It cannot be used. You can click the left mouse button to activate the mouse. 4. If the mouse has not been used for a long time, please remove the battery in the battery warehouse to prevent the battery from leaking and damaging the mouse. Package including: Wireless Mouse * 1 USB Receiver * 1