General Mouse Size - 120(L) X 67(W) X 37(H)mm Mouse Weight - Size 4: Medium Specification Resolution: 400/800/1600/3200cpi 4 buttons optical mouse On-board memory 64 KB Cord length: 1.8m Features 4 Programmable button gaming class optical mouse On-the-fly adjustable CPI button: 400/ 800/1600/3200cpi Adjustable polling rate (/second): 125/ 500/ 1000Hz Frame rate: 3600fps Acceleration: 30G High performance tracking speed: up to 70 inches per second Macro-abletm Gaming Mouse with 64KB on-board memory LED light effect Ultra-durable nylon cord High quality Telfon foot pad