Read Before Buy:
1, C210 = Keyboard working with cable only; W210 = Keyboard working with 2.4g dongle only (AAA battery* 2).
2, Keyboard basic specs:
Cherry mx switch; PBT Doubleshot keycaps, 3-way cable liner; NKRO for C210 and 6KRO for W210.
Media keys, add-on keycaps, Smooth typing , Fast response.
Weight is 1.7kg, size is 443*137*42mm.
Dry battery taken out of box for air shipping safety.