Diving watch analogue watch quartz watch series tauchmeister 1937 professional deep sea case material stainless steel water resistant to 600m 60 atm case size 40 mm case height 14 mm watch glass sapphire glass watch strap stainless steel clasp safety deployment clasp display analogue display type with date display property of hands luminous hands clock mechanism quartz functions time zones power supply battery operated calibre ronda cal50524h