Bought two to achieve a day-time and night-time 'blizzard' effect by focusing them tightly onto a motorised mirrorball, which we'd flown from the big wooden beams supporting a 7m high glazed roof. The 4-deg beam angle was just perfect for the two lamps to perfectly focus on the bottom diameter/half of the mirrorball, and the 10W output did a super job on the brightness/impact of the effect on the surrounding walls and floor space of the large covered walkway space, where we had set up a gorgeous Winter Wonderland scene. Because the lamps were fitted to a gate at the external entrance to the event space, we needed IP65-rated lamps, so these lamps were fit-for-purpose and, for sure, fully recommended by me.