Features This new metal band model is based on the popular square face W-218 Series. The base model's casual sporty design takes on a metal gadget feel, making it possible to match this model to a wider range of scenes and fashions. Since it is digital, this model also delivers plenty of practical functionality, including an LED light for easy reading in the dark, a 1/100-second stopwatch, an alarm, and a calendar, all protected by 50-meter water resistance. Case / bezel material: Resin Triple-fold Clasp Stainless Steel Band Resin Glass 50-meter water resistance LED backlight 1/100-second stopwatch Measuring capacity: 59'59.99" Measuring modes: Elapsed time, split time, 1st-2nd place times Daily alarm Hourly time signal Auto-calendar (set at 28 days for February) 12/24-hour format Regular timekeeping: Hour, minute, second, pm, date, day Accuracy: ±30 seconds per month Approx. battery life: 7 years on CR2016 Size of case / Total Weight : Size of case : 44.4×43.2×10.8mm Total weight : 85g