Feature: Easy and convenient operationStrong and abundant software supportElectronic pen, smooth writingPrompt response speedDurable structure and design for easy maintenance if needed. ModelGK-880D/80SDiagonal Size (Inch)80"Working principleWireless electromagneticWriting typeWireless penEffective writing area1600x1160Resolution8192x8192Aspecto ratio4:3Power supplyUSB supply,no extra power supplyInput power220 V, 50/60HzOutput powerDC ± 9VPower consumption<7WPrecision0.05mmCusor speed≥120dots/secondConsumption current≤85mAOperating systemWinXP/win7/Linux/MacWorking temperature-15°C-50°CStorage humidity10%-98%Package size (W*H*D)1765mmx1360mmx150mmPackage Weight32KGCertificationCE/FCC/ISO 9001:2008FunctionMouseWritingObject editingCover screenCameraRemarkZoomMultimedia introductionMultimedia recordIndexAccessories1. Two electronic pens2. Stationary bracket3. USB cable4. User guide manual5. Software CD6. Power line7. Mobile floor stand(Optional)