Splash proof, covers 28mm, can be used with almost all lenses, I used it with 100mm, was perfect

Uses expensive lithium batteries, limited functions but what to expect for this price

I use my sf flash with my 9xi. Compact, lightweight, this flash is quite good for most uses. Its guide number of 20 with iso 200 is ok for most operations. As long as you dont ask it for extended distances, it's the perfect buy if you think your integrated flash is not powerful enough. The flash quality of the sf is good. Sometimes you may feel flash didn't work but it did, it's just that the sf is rather discreet.