1. Aluminum alloy frame 2.Gesture recognition 3.USB connection 4.two pen writing and ... frame make it look stylish, sturdy and durable.2.Gesture recognition Able to write, flip up and down, zoom in ... antistatic, anti-electromagnetic interference and anti-dust.3.Support multi-system Support for windows series, Mac OS, Linux and other ... Interactive whiteboard, 105 inch, finger or objects writing system