ship from Japan Design for Comfortable UseThe design allows you to operate the buttons easily and place your hand and fingers in a natural position for easy operation. 7 buttons, including side buttons, can be customized. Easy to connect with Unifying receiver (USB receiver) and ready to use. Safe and Secure Mouse body size (W x D x H)mm: 71 x 109 x 42 Battery: AA size dry cell x2 pcs. Package contents: Mouse body, Unifying receiver, AA batteries x 2, User’s manual, Book Info: Supported OSWindows: Windows 7, Windows 8, Windows 10 or later USB portMac: mac OS 10.4 or later USB port Logicool Options software: Windows 7, Windows 8, Windows 10 or later/mac OS 10. .11 or later Operating distance: Approx. 10m *Depends on operating environment and conditions.