they arrived within reasonable time
they cost around 1 pound each..
they better quality than in a pound shop..
they came with fully charged batteries..
they really bright..
value for money, they do the job.
I had 1 of SIMILAR ones, which costed me 7 pounds, and after less than 1 year, it gave up, it stops working if you shake it and there was only 1 of them for 7 pounds.. that was a rip off. The button was hard to press.. the only advantage it was orange color.. and china doesnt make orange yet for some reason :D
the only downside I had with these ones, I received 2 of them, but each is slightly different :) 1 of them is a bit more transparent, and is very easy to press the button to turn it on.. the other one is more plain white and button is hard to press, but still better than the expensive one I had (Night isle was the "brand" or something.. useless expensive cr..**)
about the product.. you just slide them on your spokes, all way down so they sit on any spoke between the 2 neighbouring spokes :) no need any ties or anything (but you can tie them if you want, they have holes for some purpose :)
there is 3 modes as far as i remember, first is blinking (flashing if you prefer).. another one blinking too (i think so..), and last one steady..
so I use the one with easy-press button on back wheel and turn it on in the dark, but the front one I use only in dark foggy or rainy conditions, as it distracts you a little sitting on the front wheel.. its bright. so it doesnt bother me that its hard to press it on the front wheel at all.
my gf had same ones (cheap) on her bike for about a year.. with rain and no rain.. she cycles once a week maybe.. and the batteries still working, not been replaced.. lights working too.. no problems with them. I recommend.. even IF i received 1 faulty.. it IS TOO CHEAP to complain :) cant go wrong.