Based on my observations this flash has a lot of issues. It is difficult to use and inconsistently produces good lighting. The rechargeable battery dies quickly and cannot be replaced easily. It MAY be cheaper than other options, but it is not worth the hassle..
14 Review
Enhance Your Photography with the Olympus FL-600R Wireless Flash
9 Review
Wireless Macro Twin Lite Flash - Meike MK-MT24S for Sony MI Hot Shoe π· Mount Mirrorless Cameras such as A9, A7III, A7RIII, A6400, A6300, A6000, A6500, A6600 and more
11 Review
Canon 600EX RT Speedlite Flash Black
10 Review