Product details Features: Size (H x W x D): 2.6 x 2.3 x 0.7 inches (67 x Weight: 2.1 oz (60 g) Material: Resin Country of Origin: China Accessories: Neck strap Waterproof: 5 ATM water resistant Clock display functions: hour, minute, second, am/pm (am/pm), 12/24 hour display Calendar Display: Month, Date, Week Alarm function: time alarm Chime function: Hourly time (00 minutes) Measuring time: 23 hours, 59 minutes, 59 seconds Measuring unit: 1/100 second (less than 30 minutes), 1 second (more than 30 minutes) Measurement function: Normal measurement, split measurement, 1 and 2 measurements Power Supply: Lithium button battery CR2032
