Digital Stopwatch is a very versatile product. In normal mode it will display Time of the day in Hour, Minute, Seconds. Press Start button once, and the stopwatch Mode will turn ON. The product comes with a robust Plastic . When readout becomes dim, it is time to replace the battery. Un-screw the back and replace the old batery with a new AG10 button cell battery. Digital stop watch is widely used for various applications in Sports, Laboratories and other industries. Stop watch is a handheld time piece designed to measure the amount of time elapsed from a particular time when it is activated to the time when the piece is deactivated. Engineered with precision, these are renowned for accurate readings and high efficiency. The offered stop watch is designed in compliance with the set industry standards and assembled using components of superior quality to ensure high performance at user’s end. Features: Large LCD Display for easy readout and Built-in Alarm Function. Stopwatch : 1/100 second Time Display : Hour, Minute, Seconds Display : Day, Date, Month Alarm. User Manual 1 second table settings: under the normal time display, press MODE key at a time, would have seen enter the stopwatch, and then press a START button (right) to start the timer, stop and then press START button once, continued to press a START button. Again zero timer, stopwatch stop State, press the SPLIT key (left) will return to zero time. 2 alarm time setting: in the normal time display, press the MODE button two times, you’ll see to enter alarm time setting, then press the START key (right) to start timing, press the SPLIT key (left mouse button), you will be transferred to the revised. 3 time set: in normal time displayed Xia, by three times MODE key, on will see seconds number in Flash, by about SPLIT key (left key), on will see scores in Flash, then by START key (right key) put scores adjustable good, by about SPLIT key (left key) on will see Shi number in Flash, then by START key (right key) put Shi number adjustable good, by about SPLIT key (left key) on will see day number in Flash, then by START key (right key) put day number adjustable good, All this week for months, and after a tune up, press the MODE key to exit is completed 4 alarm switch: press and hold the RESET and hold and then press START/STOP can!