It’s double however when I took it out of storage after couple of years only one works Both switch on charge etc but only one actually suctions? May be good as single or you may be able to make it work and fix I am not sure but this is why it’s sold cheap as single really Other than that I’ve used it only handful of times as my daughter decided to latch and didn’t need it anymore and I had it in storage since Will be cleaned before posting and sterilised in Milton