Number of Keys: 104 Keys Weight: 3.09 lbs. (1,400 g) Keystroke Lifespan: Over 50 Millions Multimedia Keys: Independent Control Keys (Pay/Pause/Mute/Volume Down/Volume Up) Gaming Mode: Fn + Windows Interface: USB2.0 Gold-plated connector N-Key Rollover: N-Key Rollover (Gaming mode); 6-Key Rollover (Standard mode) Accessories: 16 additional Keycaps (4+12), 1 Keycap Puller and 1 Palm Rest OS: Supports Windows 10/8.1/8/7/Vista/XP and Mac OS X (Normal Mode) USB Cable: 2M Braided Fiber Main Key Switches: Cherry MX Red Switches with RGB Mystic Light Dimensions: 17.28’ x 5.55’ x 1.50’ inches