Logitech G603 review (a fantastic wireless mouse with a slightly dated design) - woorkup
Logitech G603 Lightspeed Wireless Gaming Mouse : Logitech G603/G613 wireless gaming mouse and keyboard review: Is it possible to game without wires? - HardwareZone.com.sg
Amazon.com: Mouse Wheel Mouse Roller Scroll Replacement Parts Metal Mouse Pulley Scroll Wheel Gaming Mouse for logitech G403 G703 G603 G403 Hero G703 Hero Mouse Repair Parts (Black) : Video Games