Yes, it's a bit random. When I first got it I was like "WTF is this?" And it really put me off, thought I'd never be able to get on with it. But I was so pleased with the coils and performance that I kept on using it anyway, and now I hardly notice it.So I thought I’d have a go with one of these. It’s not a bad vape … but I have to say I’ve never heard a vape device make such an odd buzzing sound! It’s a bit disconcerting (and I’ve tried a lot of vape gear!)