No but I have the identical light via China (was about £10 I think), I haven’t actually used it yet but I had a similar one last year (not the same design though) and it lasted two rides before the lasers stopped working. This new one I’ve just taken the case off and put vaseline all around the ‘seals’ but not done an evening road ride yet. Given how cheap they feel (and previous experience) I wouldn’t recommend having it as the only rear light on your bike. I wish someone would do a decent £30-ish version.
In operation though they’re pretty effective IMO, same reason why I use a fibre flare, being different to the normal red dot they draw more attention from drivers.
