i don't have any balloon to test it. but i can melt through a slim cd case(but also normal cd case.) in about5/6 sec. and melt through it...FROM 4 meters in aoout 10/12 sec. but at 4 meter tyou must be a lot precise on focus the point
i reached about 0.34 mrad of divergence!!! at 710 meter the point is like a human head