Please help--any experience with Chanel J12 watches from dexclusive ?

  1. is it safe to buy Chanel J12 watches from my husband bought me one from there as a present and I'm worried it's fake. Can I bring it to a Chanel store to have it sized? will they confirm it's real? dexclusive will only take the return if it has the dexclusive tag still on it...but will Chanel not help me if the tag is on?
  2. I have no experience with that seller. Personally I would only buy a Chanel watch from a Chanel boutique or Neiman Marcus or Saks 5th Avenue.