Casio vintage calculator watch CA506G-9AVT

specifications: case size: (L x W x H), 44.9 x 34.8 x 10.6 mm case and bezel material: resin band: stainless steel band, adjustable clasp water resistant power supply and battery life: Approx. battery life: 5 years on CR2016 features: Dual time stopwatch daily alarm, hourly time signal mute feature: button operation tone on/off 8-digit calculator 12/24-hour format regular timekeeping: Hour, minute, second, am/pm, year, month, date, day full auto-calender (to year 2099)