Review on Enhance Your Photography with the Olympus FL-600R Wireless Flash by Jeremy Hudson

I'm glad I bought it used and didn't pay full price. Works fine but doesn't work in all modes on my OMD EM-10 (will not be TTL). However, it works on my OMD EM-1 when using an Olympus flash extension (no TTL). It will only be TTL if it is the camera hot shoe. Remote mode works on OMD EM-1 but not on my OMD EM-10. However, if you put the flash in remote mode, you can control it from either model. Also, it's not that small and even quite heavy when charged with 4 batteries, so carrying it around with my camera isn't a cakewalk. I have to update my original comment about the lack of TTL when using the Flash extension. I bought a new cable and TTL works fine with the new extension cord.