I purchased this used item from Amazon Outlet, and it is practically unused after opening. Price: ¥6,547 Purchase Price: ¥5,640 This is an ELECOM wireless trackball with a red trackball and five buttons. - Brand: ELECOM - Model Name: Relacon T-Trackball - Color: Black - Special Feature: Red trackball - Number of Buttons: 5 buttons - Connectivity Technology: Wireless Thank you for looking.