• 4 Levels Adjustable DPI - This wireless mouse has switchable DPI levels between 1000 / 1600 / 2000 / 4000 to meet your special needs and improve sensitivity. Accurately restore motion under high-speed operation, perfectly supports 4K/8K high-definition display
• Ultra-Quiet Mouse - With a noise-free design, the mouse is very quiet whether you are clicking buttons, scrolling or moving the mouse, it is an ideal computer mouse for offices, conference rooms, cafes, libraries, bedrooms
• Slim and Comfortable - The USB receiver fits conveniently inside the slim wireless mouse, and the ultra-thin, lightweight features make the USB mouse easy to carry or travel. The ergonomic design keeps hands comfortable using all day
• Long-lasting Battery Life - Using advanced process chips, with intelligent power-saving technology, the battery life is up to 18 months. The computer mouse is powered by 1 AA battery (battery not included in the package)
• Wide Compatibility - This laptop mouse is easily compatible with for Windows 7/8.1/10/11/XP, for Mac OS, for Linux, for Chrome OS, Android. Works on laptops, computers, for Chromebooks, for Macbooks, tablets, laptops, and more

Note: 

• Only 2.4G USB connection, no Bluetooth-compatible for the computer mouse.
• The USB receiver is stored in the wireless mouse. Open the cover and you'll see it next to the battery slot.
• To wake up the mouse, move and click the mouse at the same time.

Specification:

• Brand: UGREEN
• Model: MU001
• Mouse thickness: 3cm
• Click the button: 3 million times
• Reel: metal material, silent encoder, 300,000 times lifespan
• Level 4 DPI: 1000/1600/2000/4000, default is 1600
• USB receiver: 2.4G 250Hz
• Distance: 15m
• Battery: 1 AA battery (not included)
• Connection: 2.4G wireless
• DPI switching: Press the bottom DPI button to cycle through switching
• System: Universal compatibility (for Windows 10/8/7, for Mac OS, for Chrome OS, for Linux, etc.)