BenQ MX660P 3000 Lumen DLP XGA Projector USB Display offers the plug-and-play convenience of USB connection Wireless Display keeps cables and wires out of everyone's way with the BenQ Wireless Display Adapter (optional accessory) Closed Captioning and Long Lamp Life up to 5000 hrs. Teaching template function allows you to easily write or draw on whiteboards and blackboards without the need to drawing lines or charts 3D ready