Lightweight construction: total weight ~70g PixArt PAW3370 with up to 19000 CPI Pre - sorted Kailh GM 8.0 switches Number of Buttons: 6 (2x top, 2x side, 1x mouse wheel, 1x CPI on bottom) Connection Type: wired (USB 2.0 Type A) Cable: Black Flex Cord 2.0