it is an off brand driver but functions something like one of the lpc meanwells (although with a higher minimum voltage requirement)
the xp-e is something of a repackaged xr-e, the dome is smaller which widens the angle slightly, somehow the vf has also dropped something like .2v, the package is the same size as the xp-g which doesnt come in any colors yet. i think the xp-e is the same die as the xr-e as well
something like 10 by 4, by less than an inch tall, it is going to light a 12 x 10 x unknown height , a 5 gal hex, this is going to be a lot of light, i'll try to get pics when its up