I ordered this flash and just received it. Something like. Instead of a Mcoplus MK-320 TTL flash for Olympic, I got a Meike Speedlight MK320 flash for Lumix. ? The closest thing to Revain is the Neewer Meike Speedlight MK320 flash for Panasonic and Olympus so I think I got that. Then the SKU label on the box actually lists Mcoplus MK-320 TTL flash for Olympus. Anyway, in my quick TTL mode tests on my OMD EM-10 (probably all I'll ever use) it works great. The size is perfect and it's very light. So if it lasts I'm happy.