Specifications: 1) Totally wireless freedom 2) 2.4GHz digital radio technology 3) The keyboard operation distance: Above to 10m 4) Electronic data: +3V 5) Operating mode: <12mA @3V 6) Stand-by mode: <7mA @3V 7) Sleep mode: <1.5mA @3V 8) Compatibility: IBM AT, Windows98/2000/XP 9) Communication: USB 10) Dimensions: 438(L) x 143(W) x 15(H)mm 11) Keys High: 5.0mm 12) Keyboard N. W.: 320g 13) Layout: 104 keys + 18 keys multimedia 14) Keyboard color: Orange, any color as required 15) Electronic data: +5V DC@250Ma 16) Total travel: 2mm-/+4 Packing: Color box (retail packing) 20pcs/packing Dimensions: 46 x 40 x 43cm N. W.: 6. 5kg G. W.: 11. 0kg