Analogue watch quartz watch diving watch mens watch series nixon the 51 30 case material stainless steel water resistant to 300m 30 atm case size 51 mm case height 15 mm housing colour grey watch glass mineral glass watch strap stainless steel clasp safety deployment clasp watch strap colour grey watchstrap width 25 mm display analogue dial colour black numerals arabic clock mechanism quartz functions tide function power supply battery ope