olevs luxury automatic watches for men blue gold mechanical mens watch waterproof self winding skeleton stainless steel big man wristwatch day date moon phase relojes hombre automatico luminous olevs men's automatic mechanical watch skeleton, high hardness coated glass mirror wear resistant scratch proof.the vibration frequency of 21600 per hour guarantees the punctuality of time, the energy reserve of 45 hours, and the service life of more than 10 years