A winder does the job of your wrist movement when you're not wearing your watch. The winder rotates the watch slowly, which causes the rotor inside to spin. The turning of the rotor inside the watch is what winds the mainspring.
A watch winder is a mechanical device. That means that it can break, and the cheap ones always do. Therefore, the most important thing to consider is the dealer you buy your winder from and the product you buy. We have been in business for over a decade selling watch winders and have excellent customer ratings to back up our claim to be the best. Most winders sold on other internet sites are "throw away" units. If they break, you throw them away! The winders that we sell and recommend are repairable and dependable. Lifetime warranties do you no good if it breaks all the time, so the winders that we sell are built to last.
We talk to at least one customer each day who says, "I made a mistake and bought a cheap winder. Now I have a pretty box but not a winder..." Do not make this mistake. Read our recommendations and buy a winder from us!
The products that we sell are on the pricier side of the watch winder market because they work. The others do not work, and if they do they will not last long. If you consider buying a watch winder priced at under $100 per winder head, you might as well pull out Ben Franklin's picture, light a corner and hold it until it burns your fingers and drop it in the toilet! The double winders you see sold for $100 will do just that (if they don't mess up your watch first)! If the cheap stuff worked, we would sell it. We have nothing against inexpensive products; we just have standards.