Logitech G105 Gaming Keyboard with LED Backlighting (Certified Refurbished) This Certified Refurbished product is tested & certified to look and work like-new. The product includes all original accessories and is backed by a 90 day warranty. Long-life blue LED backlighting: Select from two brightness levels to easily see keys in the dark 6 programmable G-keys: Configure up to 18 unique functions per game, including single key presses, complex macros or intricate Lua scripts* (*Requires software installation) Multi-key input: Press up to five keys at once to perform multiple complex actions without interference or ghosting Game/desktop switch: Disables the Windows/Context Menu keys to prevent accidental game interruptions