Though several companies are struggling to sell their smartwatches, Apple CEO Tim Cook says sales of Apple Watch set a record during the first week of holiday shopping. Cook added that the current quarter is on track to be the best ever for the product. The only problem: The company, which loves to numbers do all the talking, won't disclose how many Apple Watch units were shipped or sold. From a report on Mashable: "During the first week of holiday shopping, our sell-through of Apple Watch was greater than any week in the product's history. And as we expected, we're on track for the best quarter ever for Apple Watch," Cook told Reuters in an email. This is not surprising: The company has never revealed any sales data for the Watch, bundling it with the "other products" category in its earnings reports. There have been quite a few attempts to extrapolate what this means in numbers, but the truth is that any of those attempts could be a few million units wrong either way.