Logitech M720 Triathlon Multi-Device Wireless Mouse, Bluetooth, USB Unifying Receiver, 1000 DPI, 8 Buttons, 2-Year Battery, Compatible with Laptop, PC, Mac, iPadOS - Black. Mouse is in great preowned working condition, but some of the black color smoothed out above the Logitech word from use. Mouse uses one AA Battery as shown in the pictures, but battery is not included.