Relatively fast delivery. This trigger perfectly fulfilled its role. It is a bit of a chore to change groups with the keys to adjust the intensity of the flashes, but we made it. A little like roulette on new V6 cactus would have been more convenient. It also lacks a fast clip (as on the Nikon flash units) instead of the clamping screw that is still quite pleasant to use. Ideal for use with YN-622N in i-TTL or manual. In short, I strongly advice! A purchase to closed eyes.