Dual Mode. Innovative wired and wireless dual mode mechanical keyboard gives you unparallel experience. 2.4G fast transmission for stable signal transmission.Built-in Lithium Battery. Large 1300mAh battery use for 500 hrs under non-backlit mode.Large Foot Pad. Use high quality and anti-slip silicone pad to keep stable when using.87 Keys Simplified Layout. Save more desk space and move your mouse with larger space. Reduce the manipulation time between the left and right hand.Aluminium Alloy Panel. Elegant and durable. Shockproof and anti-scratch.Smart Indicator Light. Blue light flickers for charging; red light on near F1 after successful connection; red light off after fully charged.