How to do watch timing adjustment - regulation.

Reloj Seiko automático. Dial blanco con ventana calibre y subdial. Agujas doradas. Numeración romana. Caja de acero inoxidable con fondo visto. Correa de cuero marrón. WR 50 m. Cristal Hardlex. Medidas: 42 mm de ancho (sin contar corona), 48 mm de alto y 12 mm de grosor. Seiko automatic watch. White dial with window see through caliber and subdial. Roman numeration. Golden hands. Stainless steel case with see through back. Brown leather strap. WR 50 m. Hardlex Crystal. Measurements: 42 mm wide (excluding crown), 48 mm high and 12 mm thick.