WORK 2 DEVICES AT ONCE: Connects with 2.4G with your first device, and Bluetooth with your second device. You could switch the mode between two devices by just a click. With 2.4G Wireless Mode, simply plug in the USB receiver to your device and you’re all set. With Bluetooth 5.1, you may choose to connect your mouse without using the USB receiver. Even more perfect for devices without a USB port. Note: You can't use Bluetooth mode and 2.4G mode at the same time.EXTENSIVE COMPATIBILITY: Compatible with laptops, PCs, tablets, and smartphones with USB port or Bluetooth connection. Note: BT 5.1 System Requirement: Windows 8.0 or above; MacOS 10.10 or above; iOS 13 or above and Android 4.3 or above. Please double check or update the operating system before purchase.3 DPI LEVELS: (800, 1000, 1600) allows you to adjust mouse speed with just a click using high-performance optical chips.SMART FEATURES AND MORE: Noiseless click feature eliminates 90% of sound from mouse click allowing you to focus on your work with no distractions, as well as prevents you from disturbing others. Slim design for comfortable hand feeling. Product size: 4.37" x 2.28" x 1.02"RELIABLE AND LONG LASTING: Consciously designed with recharging feature to both reduce waste and save you from purchasing extra batteries. Stable connection up to 33 ft. Mouse will enter sleep mode when it stays inactive for 8 minutes, which saves power and guarantees long battery life.