Thanks to 3LCD Bright Era panel technology by Sony, users can enjoy very bright, high contrast, widescreen WXGA images with excellent color stability. The projector's powerful color light output ensures that presentations are always seen clearly. Easy to install with plenty of interfaces for connection with other devices, the VPL-SW620C integrates seamlessly with school or office networks. There's a wide range of smart energy-saving features built in. In addition, extended lamp replacement time allows for synchronized filter & lamp maintenance, reducing the product's downtime & minimizing costs. Learning is made even smarter, more satisfying & collaborative with dual pen interactivity allowing teacher & pupil to write on screen simultaneously.