Case: 41.3 x 47.2mm Plastic bezel Stainless steel case Brushed finish with PVD coating 1.2mm mineral crystal 3BAR / 3ATM / 30M daily waterproof water resistance Module: Battery length: approx. 18 months on CR2016 Electro-luminescent backlight Timekeeping: hour, minutes, seconds, pm(P), month, day, the day of the week, auto-calendar, switchable between 12 hour and 14 hour formats, operation tone settling (OF/ON) Multi-function alarm Hourly time signal Stopwatch: measuring capacity: 23 hours, 59 minutes, 59 seconds Bracelet: Tapered stainless steel band with butterfly clasp   Style: sgk001-pbblkblk Color: Black Translucent Bezel Material: Stainless Steel / Plastic