[Size] Case size (Length x Width x Thickness): 1.5 x 1.1 x 0.3 inches (38.8 x 29.8 x 8.1 mm), Belt: Width approx. 0.6 inches (15 (buckle side) - 0.8 inches (20.5 mm), Lug width approx. 0.7 oz (18 g)
Main Features: Dual Time Stopwatch (1/100 second, 60 minute count) Time alarm, time signal. Auto calendar. Switch between 12 and 24 hour displays. Accuracy: ±30 seconds per month Battery Life: 3 years (This is the value when replaced with a new battery. The batteries already set on the watch are monitor batteries to check the functionality and performance of the watch, so the battery life will be shortened. )