IWT series interactive whiteboard is an upgrade version of IWR series, specially from the out-looking, for example the thickness of frame is reduced from 31.5mm to 28.2mm, whiling in the front frame we adds a hidden design of cover for the USB and HDMI ports. The latest design of infrared touch screen has higher precision and faster response, that help us to write and draw easier in the strong sunlight. Specially now we launched the latest upgraded model with built-in microphone and camera, that can better meet the needs of digital teaching and will be an essential interactive display device for building an intelligent campus and realizing intelligent teaching.