Available for immediate purchase! Price negotiable! Purchased about two months ago, but hardly used. This is a set of the following 3 items: - MX ERGO S - Perixx PERIPRO-303 GBK 34 mm Replacement Trackball Glossy Black Speed Type - MX ERGO Angle Adjustment Stand, Tilt Stand, Tilt Parts, Angle Adjustment Parts, MX Ergo (40°, Black) - Model Name: MX ERGO S - Brand: logicool - Color: Black - Features: Trackball - Number of Buttons: 8 buttons (including tilt function) - Connection: Wireless (Bluetooth or Logi Bolt receiver) - Power: Rechargeable (USB-C) Connection type... Wireless (Bluetooth) Power supply... Rechargeable