Technology :Surface Acoustic Wave(SAW) Resolution :4096 x 4096 ,Z-axis 256 Material :Pure glass(Vandal-proof ,Anti-glare) Accuracy : < 2mm Light Transmission :>92% /ASTM Touch Force :30g ( Ajustable ) Durability :Scratch-free; More than 50,000,000 touches in one location without failure. Surface Hardness : Mohs' 7 Multi-touch: Optional ( software support ) Parts : Connect cable,Double-sided adhesive, dustproof strip,Controller Certificates : CE, FCC, RoHS Interface : USB，RS232 can optional Working voltage : 12V±1V & 5V±0.5V optional Working Current : 80mA Maximum Current : 100mA Response time : ≤16ms MTBF : > 500,000 hours Operate system : WinXP/Win7/WinXPE/WinCE/Linux/Android