MX Master Wireless Mouse
Contoured Mouse - Dual-Mode USB Wireless/Bluetooth Wireless Connectivity - 400 ~ 1600dpi Switchable Darkfield Laser Optics - 5 Buttons - Scroll Ring - Black and Copper Colour/Design - 2.4GHz Unifying Nano Transceiver - Right-Handed Ergonomic Design - Battery-Level LED Display - Windows / OS X Compatible - 1 Year Depot Carry-In Mfg. Warranty