How to Open the Logitech G903 - iFixit Repair Guide
Logitech G903 Wireless Gaming Mouse Review - IGN
Logitech G903 LIGHTSPEED Wireless Gaming Mouse, 12,000 DPI, RGB, Lightweight, 7 to 11 Programmable Buttons, Long Battery Life, Compatible with PC / Mac - Black (German Packaging) : Amazon.co.uk: PC & Video Games