The following passage of the product description should know:
360 degree visibility. about 25 hours of light with batteries 2x LR1 weight: only 50 g (incl. batteries). Only registered ideal for racing bikes under 11 kg Also available as additional light for children's bikes, trekking bikes, city bikes, mountain bikes
In other words, as the sole Taillight you risikiert a (low) fine.
Whether 25 hours of light agree, I do not know. Thanks Aldi batteries which is appropriate and acceptable.
