If you're often on the go, the Vivitek Qumi Q3 Plus is the right choice for you. This compact projector only weighs 460 grams and has an integrated battery. You can take it with you anywhere and project images wirelessly for 2 hours. Thanks to the integrated media player, you don't need to bring any external devices. When you insert your USB flash drive in the projector, you can watch your saved images on the big screen. You can connect the projector to an iOS or Android smartphone using WiFi. The projector will then show the images that are displayed on your phone's screen. The projector has integrated 2-watts speakers. To get a more powerful sound, you can connect the projector to a speaker system via Bluetooth.