Casio's all-time Classic Calculator Watch gets some new friends in a few particularly great colours. Sure, they take you immediately back to the 80's which is an instant buzz, but they're actually a super functional and practical timepiece. Complete with an eight-digit calculator for any calculating you need to do on the go. Lightweight, easy to read, water resistant... comfortable on the wrist. We like them very much! Basic Information Band: Resin band Case and bezel material: Resin Case size (L × W × H): 43.2 × 34.4 × 8.2 mm Power supply: Approx. 5-year battery life (CR2016) Water resistance: Water resistant Weight: 25g Watch Features Accuracy: ±15 seconds per month Alarm: Daily alarm Hourly time signal Calendar: Full auto-calendar (to year 2099) 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 Stopwatch 1/100-second stopwatch Measuring capacity: 23:59'59.99'' Measuring modes: Elapsed time, split time, 1st-2nd place times World Time Dual time