I have 3 invicta subaquanomas they are large and heavy dive watches and broke my mid price 6slot watch winder twice. First time I had it fixed second time I stopped  using the broken slots. This winder even though cheaper handles the one watch at a time I put in it perfectly. Meaning the big heavy invictas. Would recommend this winder for a lot of different types of watches and the vendor was prompt.  I highly recommend both the product and vendor