Product Number CK-550-GKTR1-** (Red switch), CK-550-GKTL1-** (Blue Switch), CK-550-GKTM1-** (Brown switch) Keyboard Switch Type TTC Mechanical Switch (Red/Blue/Brown) Keyboard Material Plastic, Aluminum Keyboard Color Gunmetal Black Keyboard Keycaps Part of Asia/US layout: ABS Double-injection keycaps, Other layouts: ABS Painting & Laser-engraved keycaps Keyboard LED Color RGB Keyboard Polling Rate 1000Hz Keyboard Response Rate 1ms / 1000Hz Keyboard MCU 32bit ARM Cortex M3 Keyboard On-board Memory 512 KB On-the-fly System Yes, for Multi-media, Macro Recording and Lighting Control Multimedia Keys Through FN Smart Cable Manager N/A Wrist rest Yes Keyboard Cable Fixed Rubberized 1.8m Software Support Cooler Master MasterPlus+ Keyboard Connector Cable USB 2.0 Keyboard Cable Length 1.8 Meters Keyboard Dimensions (L x W x H) 460 x 135 x 41 mm Keyboard Weight 908g (without Cable) Product Keyboard Serie CK Series Keyboard Type Mechanical Disclaimer *To ensure optimal use of the product, please download the MasterPlus+ Software and update the latest firmware.