The world-popular big case Series continues to grow with the addition of models created by combining and layering parts in a way that creates a multi-dimensional look. A big rotary switch at 3 o'clock adds to the overall design and also enables intuitive operation of various functions. An LED illumination system allows easy viewing even in the dark. Features: Mineral Glass Magnetic Resistant Shock Resistant 200-meter water resistance Case / bezel material: Resin Resin Band LED light Auto light switch selectable illumination duration (1.5 seconds or 3 seconds) afterglow World time: 31 time zones (48 cities + coordinated universal time) one-touch UTC time zone daylight saving on/off Home city/World time city swapping Stopwatch: 1/100-second stopwatch measuring capacity: 23:59'59.99'' measuring modes: Elapsed time & split time Countdown timer: Measuring unit: 1 second range: 60 minutes start time setting range: 1 minute to 60 minutes (1-minute increments) auto switching to elapsed time measurement (up to 60 minutes 1-second units) when the end of a countdown timer operation is reached 5 daily alarms (with 1 snooze alarm) Hourly time signal Full auto-calendar (to year 2099) 12/24-hour format Button operation tone on/off Accuracy: ±15 seconds per month Approximate battery life: 3 years Battery SR927W × 2 Size of case: 55 × 51.9 × 18.3 mm Weight: 70 g