Kensington Expert Mouse - Wireless Ergonomic TrackBall Mouse for PC, Mac and Windows with Ambidextrous Design, Optical Tracking, Scroll Ring & 55 mm Ball – Red (K72359WW) : Amazon.co.uk: Computers & Accessories
Kensington Presenter Expert Green Light Wireless Presenter with Cursor Control, Joystick and Backlight Buttons - Black : Amazon.co.uk: Stationery & Office Supplies
Thought the Kensington Expert Wireless will end my trackball hunt... Guess not. : r/Trackballs
For Kensington Expert Wireless/Wired Trackball Mouse K72359WW/K64325 Travel EVA Hard Protective Case Carrying Pouch Cover Bag Compact Sizes by Hermitshell : Amazon.co.uk: Computers & Accessories