At Bob's Watches, your trust is very important to us. We believe that buying a pre-owned Rolex watch online should be simple, honest, and straightforward. To that end, we guarantee that every Rolex watch on our site is 100% authentic, comprised entirely of Rolex parts. Our mission is to be the leading trusted online source for selling and buying authentic pre-owned Rolex watches. We stand behind this authenticity guarantee with a full money back refund on any watch not found to be completely genuine.
The first references of the Zenith El Primero were launched in 1969, which featured the El Primero caliber. This movement is regarded as one of the most accurate automatic chronographs
The Zenith El Primero was produced in 1969 and compared to movements like the ETA's Valjoux 7750 for example. This model promises a longer lasting power reserve of 50 hours.