I've been a photographer for over three decades and I have quite a few flashes; and without a doubt, this is the worst Flash excuse I've ever used. It's no more powerful or brighter than the built-in flash on my Pentax K30. It cannot be mirrored even at high ISO values. This is supposed to be a pre-flash, but most of the time it doesn't work.
Canon 600EX RT Speedlite Flash Black
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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
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10'' LED Ring Light With Tripod Stand & Phone Holder For Live Streaming/Photography, Dimmable Selfie Makeup Video Recording Light With 3 Modes & 10 Brightness Levels
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Enhance Your Photography with the Olympus FL-600R Wireless Flash
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