ship from Japan [Logitech G G600t MMO Wired Gaming Mouse] The G600t is a gaming mouse optimized for MMO games with 20 buttons for superior customization and ease of use. 20 G-keys] 3 primary buttons, 12 thumb buttons, left and right tilt buttons, scroll wheel, and G-Shift button, each button can be programmed, assigned and customized. 12 Thumb ButtonsAs a result of direct input from MMO gamers and developers, the 12 thumb buttons have been divided into two groups, front and back, with three slanted buttons facing each other. G-Shift Button] While the G-Shift button is held, you can assign a different function to each button than normal, doubling the assigned function of each button. PC Requirements] Windows 7 or later, macOS 10.11 or later, Chrome OS, USB port Internet connection (required when downloading the Logitech G HUB software)