Long Battery Life - This is a premium lithium battery with a lifespan of 1.5 years. Thanks to the premium buttons, every press is done at the right time. The unique round case design resists cracking, so you don't have to worry about dropping it. 1 / 100th of a second resolution: Measure time with an accuracy of one hundredth of a second. Use the "split" function to precisely measure several events. Time, date and alarm functions: Switch between 3 display modes to check the time and date and set your alarm. Lightweight: Thanks to its ultra light weight and the supplied strap, this sports stopwatch is the ideal stopwatch for athletes - especially runners - coaches and referees. Waterproof: Suitable for all weather conditions. Whether it's rain, snow, frost or sun. Features: Waterproof. Displays hour, minutes, seconds , the AM / PM indicator, the month, the date and the day of the week. This sports digital stopwatch allows you to display the time in 12 or 24 hour format. / p Stopwatch with hourly time signal. More comfortable compass design. High quality and exceptional performance. Features: Material: plastic. Power supply: button battery (not included). Dimensions (L x W x H): 8.0 x 6.4 x 2.0 cm. Color: black. Scope of delivery: 1 multifunction sports stopwatch. / p Note: it does not include other things, the color is based on the first picture, and other pictures only show the effect Due to the differences between different monitors, the picture may not reflect the actual color of the item. Due to manual measurement. Please allow deviation. Thank you!