The new bezel design shares a similar sleek frame as its predecessor, but the One 2 SF incorporates dual colors on the bezel to match all varieties of keycap colorways.They use USB HID with the highest frequency of 1000Hz polling rate, meaning the keyboard is sending its input signal(s) to your PC 1000 times per second.3 level angle adjustment keyboard stand.With fully customizable hardwareLonger life expectancy & signal stability. Handle any number of simultaneous key presses with the option of N-key or 6-Key Rollover.SF stands for Sixty-Five, they bring the groundbreaking size for customers' choice.