Thought I'd repost my review from 2009. They do look like resurrected Winkku. Flecc, I think the indicators did show rearward s as well, but in daylight not very clearly.
Repost....
My personal thoughts and musings. I've not had a good experience with these indicators, but what they did do was to convince me that rear view mirrors were a great idea and I then went out and bought some for both my bikes and my wife's - just simple rear view mirrors without the 'gimmicks' and wouldn't be without these. We had Winku's on our Kalkoffs before (bought in April 2009 and gave up in August 2009) but they were beset by endless problems, the main one being that the shear weight of the unit with its batteries hanging off the end of the bar-end caused so much strain on the handlebar joint that I had a number of failures - the barend fittings were replaced at least twice, including redesigned ones but still they broke. Finally, one Winku broke off whilst my wife was cycling downhill near Beaulieu and the unit ended up being flattened under a horse box following behind. Overall, with replacements and or purchases I had 3 units and 5 bar-end fittings after which I just gave up.
Interesting in the summer of 2009 met another pedelec with a Powerbyke on the Bristol to Bath Cycleway (old railway line), and he'd had a similar experience to us when he saw we had one at that time on my wife's bike. After being given one as a Xmas present in 2008 and having 'problems' , he'd also been in discussion, as I had, with Dan Wright (the designer/supplier) and he didn't then still have one on his bike. In summary, I bought 2 units, had one replaced, one flattened under horse box and one collecting dust somewhere deep in my shed with one intact bar end.
If you can keep them secured to the handlebar end are they then any good? Well, in bright daylight it's difficult for drivers to see the winking indicator and would they be looking for it anyway? At night they obviously show up as do the front/rear facing lights but... the units I had would suddenly switch off as batteries lost contact - due to vibration or circuitry problems (one unit was replaced but we still found intermittent continuity problems? In the end I just gave up. Interestingly I bought direct from original designer/source at a time when 50cycles were carrying the item amongst their accessories. I note they have stopped supplying now?
Edit 1. - Removed bit about price from original post since it's £50 for a pair
Edit 2. Final thought especially in daylight - If you get knocked off making a turn with the Winkku flashing, does that count as the same as a clear hand signal?