I have the projector...and the 2200ah battery mod, and the Alexa smart speaker. The Z3 is a very slim phone, and the battery mod is slim as well, so together they're about the size of an average 6+ inch phone, but I can go days between charges. The projector comes with it's own case and battery, you can turn any place into a theater as long as you have something to project the images off your phone onto... it's actually pretty cool, especially with a bluetooth speaker if you want an anywhere impromptu group theater experience. And the Alexa speaker turns the phone into a boombox, plus the speaker phone's loud enough you can talk to someone hands free, walking around the house while the phone's on a coffee table, almost like the person's in the house.
The mods were actually pretty underrated. And overpriced originally.... I got them brand new on clearance along with the phone, I paid a little more than the projector originally cost for everything