The ABCs of Time – Why Are Some Watch Cases Filled with Oil?

Wristwatch manufacturers focus on keeping cases air and watertight so the movements can operate trouble-free in daily use. This started in earnest in 1926 with Rolex’s robust Oyster case, but even delicate dress watches today have a degree of water and dust resistance for splashes, rain and so on. However, a small handful of brands deliberately fill […]