It works fine, does what it says on the tin, zaps nits. When my children gets nits (which is not that much) i always get paranoid and itchy so i got this to calm my fears.
It has a few of the black bobble comb ends missing. and it has a mark on it where something in my toiletries draw has spilled on it, it can be clearly seen on he pic on the right of the on off switch. Needs batteries