Mechanical keyboard with optical OUTEMU brown switches that give us the opportunity to move faster, more efficiently with a great precision The response time is only 0.2s for instance response N-key rollover technology It is full RGB programmable keyboard with side RGB lighting The top cover is aluminium ProgrammableDimensions:463x219x39mm Weight:1296g ±5 Cable length:1.8m Keys:104 Response time of switch: 0.2s Switch type: Outemu brown optical switch Peak force: 55±5gf Maximum key life: 50000000 times Backlight light LED: Full RGB All keys Anti-ghost Polling rate: 1000Hz Compatible with: WIN2000, WIN XP, WIN VISTA, WIN7, WIN8, WIN10