Like a real brake disc, this watch is designed so that the 4 cm (1.6”) disc rotor actually rotates. The cross-drill holes and side venting holes are manually drilled one by one and then counter-bored to simulate the effect seen with a real cross-drill racing brake disc. The watch movement is quartz, the body is made of chrome plated brass and the band is made with non-allergenic polyurethane. It is water-resistant and carries a one-year warranty. The watch is packed in a metal cigar shape box that is also ideal for containing glasses.