Vivitek Qumi Q5 500 Lumen WXGA HD 720p HDMI 3D-Ready Pocket DLP Projector with 4GB Memory (Black)(Certified Refurbished) This Certified Refurbished product is manufacturer refurbished it shows limited or no wear Includes all original accessories plus a 90-day warranty Native HD 720p resolution, Estimated 30,000 hours of operation 4GB built-in memory and USB port for memory expansion; connectivity options include: HDMI, Universal I/O, AV mini-jack, mini-jack audio-out to display content without a PC 3-D ready via DLP link and wireless capability through optional WiFi USB dongle