Amazon.com: Casio Digital 4549526178559, Gold, 33.5×28.6×8.6 。Resin Glass Water Resistant Case / Bezel Material: Resin Stainless Steel Band (GOLD-tone) Adjustable Buckle LED light: AMBER 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 (28 days for February) 12/24-hour Format Regular Timekeeping: Hour, minute, second, pm, date, day Accuracy: ±30 seconds per month Approx. battery life: 5 years on 3v Lithium CR-1616 Model: LA-680WGA-4