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
I Freakin' Love the Logitech G603 Wireless Gaming Mouse – Review Geek
Amazon.com: Logitech G603 LIGHTSPEED Wireless Gaming Mouse (Renewed) : Video Games
Logitech G603 LIGHTSPEED Wireless Gaming Mouse Bluetooth OR USB Receiver WITH USB ADAPTER (OPEN BOX) - Walmart.com
Amazon.com: Logitech G603 LIGHTSPEED Wireless Gaming Mouse (Renewed) : Video Games