Fortunately, I've decided to make a purchase.
The lights are in use every day for about 20 minutes and yet I could not notice any problems with rain or wet conditions. The light output of the headlight is good (but not outstanding) and the rear light is in my view highly luminous for a red light. The batteries will last very long, at our old Sigma Sport light (LED) was the leading light always empty after 2 weeks. Here I know no longer how long the batteries in it.
For the price (when buying 10,99) you can strike without hesitation here.
Only point of criticism: The workmanship and materials are already extremely "cheap", but still it funtkioniert properly. Well, a China-Shipping-product level, but at least it works in the long term. Thus, the setting has earned 4 points snatched.