Digital Stopwatch Shock Resistant, Water Resistant Traceable® 24 Hours Digital Display

Resolution is 0.01 second for the first 30 minutes; units then continue timing to 23 hours, 59 minutes, 59 seconds in 1-second increments

Accuracy 0.01%, Chronograph displays time-of-day to the second, AM/PM, date and day of the week

O-ring sealed, and have durable ABS plastic case, waterproof/shockproof