Patent No.：200530057070.2 （79 Hexagon Keys） Patent No.：200530057069.X （79 Round Keys） 79 Keyboard: ●Size: 330mm（L）?18mm（W）?.8mm（H）including keycap ●Space between Keys: Standard ●Port of Keyboard: Fixed USB+PS2 Switch Portal ●Response Time: Standard ●Working Temperature: -40～80℃ ●Function: Standard, Inner Capability of Anti-jamming ●Key-press: 95～110g ●Life Span:100 million ●Number of Keys: 79 ●Colors: black green,yellow（both are double colors) ●Net Weight of Keyboard：120g ●Weight of wire and U+P：71g ●Wire Length：1.8m ●Net Weight of Outer Carton：737g ●Size of Outer Carton：37cm?9.5cm?2cm ●Size of Color Box: 350mm（L）?25mm（W）?0mm（H） ●Net Weight of Color Box: 325g ●Quantity per Carton：20pcs/carton，Total Weight: 11kg (Color Box Package) ●Size of Packing Barrel: φ62mm?25mm(H) ●Net Weight of Natural Packing Barrel： 10g （Chinease and English Manual Inside) ●Quantity of Carton：60pcs/carton， Total Weight: 13.1kg（Natural Plastic Barrel) 20FT: 600Cartons（20pcs/carton）， 600Cartons（60pcs/carton）