Product description Main Features: 8-digit calculation function. Dual time Stopwatch (1/100 second, 24 hour scale, with split function). Time alarm, time signal. Fully automatic calendar. Switch sound effects ON/OFF Switch between 12 and 24 hour displays. Accuracy: ±30 seconds per month on average. Battery Life: Approx. 5 years (*This is the number when replaced with new batteries after purchase. The batteries that come pre-installed in the watch are purchased will take a short period of time as a monitor battery used to check the functions and performance of the watch built into the manufacture. )


