Product highlights model: h640p 6 programmable express keys battery-free pen (pw100) with electromagnetic resonance pressure levels of sensitivity: 8192 pen resolution: 5080 lpi working area: 16 x 9.9 cm (6.3 x 3.9 inch) reading height: 10mm os support: windows 7 or later, macos 10.11 or later and android 6.0 or later