It can measure up to 10 hours with an accuracy of one hundredth of a second.Ideal for those who need training and precise timingLarge LCD Display: Large three-line display,The top row shows each time period, the middle row shows the total time of each time period, and the bottom row shows the sequential timing.HD digital display of hour, minute, second, month, day, year and 12/24 hour format Ergonomic design: The stopwatch adopts a four-button design that is touch-sensitive, comfortable to hold, ergonomically designed, cool in appearance, dustproof and is shockproofFull functions: stopwatch function, metronome function, alarm function, clock function, mute function, countdown function, memory function, shutdown function, etc.Memory function: stores up to 10 readings, retrieves fastest lap, slowest lap and average lap