<p>The classic, but more delicate—people are different, after all. This model has the finest proportions with a diameter of just 33 millimeters. A truly beautiful watch powered by the manually wound Alpha movement and, like all smaller NOMOS models, with a delicate velour strap. Present model has a champagne-colored dial highlighted by a neon orange seconds hand. Reference 150 has a closed case back; reference 151 is identical but fitted with a see-through case back.</p>