I've been through a number of cheap bike lights recently which were terrible quality. This set is a different kettle of fish - bright, good battery life and very good value for money. Highly recommended.
This was the dimmest "super bright" light I've ever seen. Brand new batteries and it barely emitted even the slightest glow. Feels sturdy but it's clearly shoddily built or perhaps just bad QC as some reviewers on this site seem to have had better experiences.
I would heartily discourage people from buying this, it's useless.