ah, i see what you mean - many manufacturers say that their laser goes "x miles" or whatever, but it's actually a rather meaningless measurement. theoretically speaking, light will travel forever, at least until something absorbs it. however, the further away from the laser itself the beam travels, the wider it gets, and dimmer it gets (because all the energy is being spread out). this is where divergence comes in - 1mrad (millirad) essentially means the beam is 1mm wider for every meter it travels - as the X-85 is 1.2mrad, that's 1.2mm wider per meter. so, it starts out as a 1mm beam, at 1 meter it's a 2.2mm beam, at 10 meters it's 13mm wide, at 100 meters it's 121mm (or 12.1cm) wide, and at 1km, the beam is 1.2 meters wide.
as for customs, i'm not sure the laws in your country. but here in the UK, technically these higher powered lasers aren't allowed, but i've had 10 lasers that breach customs rules delivered here with no problems at all. customs can't check every single package they come across, so most things get through, and even on the slim chance that they sieze a package, all that happens is that nova send you out a new one (and customs usually sends nova back the old one, i think), i'm pretty sure you won't get in any trouble for it so the worst that can happen is your package gets delayed, and even the chance of that is small.