SF stands for Sixty-Five, we bring unique sizes for our fans! Most used function keys set: 4 arrow keys, delete, page up, and page down keys.The Features of Ducky One2 SF RGB Mechanical Gaming Keyboard at a Glance:65% size form factorAll new petite bezel design in pure whiteDurable typing experienceDetachable USB Type-COptimized Ergonomics - 3 level angle adjustment keyboard standSensuous lighting effectsFully customizable hardware65% Form FactorThe new bezel design shares a similar sleek frame as its predecessor, but the One 2 SF incorporates dual colours on the bezel to match all varieties of keycap colourways. The durable and exceptionally reliable performance PBT double-shot seamless keycaps are paired with German Cherry MX Speed Silver key switches. We use a detachable 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.MULTI-FUNCTIONALEnjoy optimized ergonomics with the 3-level angle adjustment keyboard stand. The diversified RGB light effects utilises 3528 SMD RGB LED. Use fully customizable hardware to customise your RGB lighting. The 4-layer PCB grants longer life expectancy and signal stability. It can handle any number of simultaneous key presses with the option of N-key or 6-Key Rollover. Get complete function keys for every using purpose, including 4 arrow keys, delete, page up, and page down keys.Ducky One2 SF RGB Mechanical Gaming Keyboard Specifications:Product NumberDKON1967STSwitchesCherry MX Speed Silver mechanical switchesActuation Force: 45gActuation Point: 1.2mmFull Distance: 3.4mmConnection InterfaceUSB 2.0Keycap MaterialABS or PBTOutput Key NumberUSB N-Key RolloverPrinting TechnologyDouble-Shot or Laser EngravedDimensions325mm x 108mm x 40mmWeight635gOriginTaiwan