... Ergonornic design comfortable handle feeling2,waterproof and anti-dust design,long time work life,over 20 million times3,no software to ... evenly,Fingers do not slip when use it.7) Long time for use for Keyboard8)Comfortable ultra-low-keycap, very close to fingertips ... a regular keyboard9) Ultra-quiet design10) With USB port, convient for use, Anti-Static,Anti-Electromagnetic interference wired keyboard ...