Interactive whiteboard Technical Items Technical Specification ModelTC-1079HD Product Dimensions84.5inch(1730*1280*26mm) Writable Size 77inch(1570*1170mm) Package Size1890*1440*120mm Temperature-10to50 Humidity 30-80% Net Weight 16.5kg Gross Weight28.3kg Function of Projection of Board Projection Size≤77inch Projection GainAvailable Viewing Angle170 degree in Horizon 160 degree in Vertical Surface MaterialPET material/Matt surface Electric Performance Induction Way Electromagnetic induction Power InputUSB power supply or 100-240VAC, 50/60HZ AC Current Consumption=100mA(USB power supply, no extra power) Signal InterfaceUSB2.0 The Maximum Length USB Cable Can Support20m Transmission Speed12M/s Anti-light IntensityUse under direct sunlight Scanning SpeedThe first point 25 ms, consecutive points 8 ms Cursor Speed180 points / sec Display Resolution4096*4096(Depends on the actual computer and projector resolution) Display Ratio4:3 Optional Accessories Wall-mounted AnnexIncluded Electronic Pen Included Interactive Whiteboard Software Installation CD-ROM DriveInclude TrolleyOptional Software category 1.ClassroomOptional 2.Meeting SoftwareOptional 3.Exhibition Dedicated SoftwareOptional Warranty 3 years