Usage Tips:Package Content: You will receive 3 pieces electronic digital sports stopwatch timer, enough quantities for your daily use, handy tool for counting, save time and effort Reliable Material: The digital timer is made of durable Plastic, is lightweight and durable enough to use. Each size is approx. 2.9 x 2.4 x 0.8 inch, the rope length is approx. 16.5 inch pocket size allows for easy storage and carrying Easy Operation: With minimal key press to Controls: start, stop and reset, very simple operation of the digital stopwatch, the counter contains minutes, seconds and hundredths of a second, including batteries that are easy to replace and remove Exact product: the display is easy to read and displays a time of 1/ 100 second without any problems with the exact timing. Use the split time function to accurately measure multiple events. This versatile stopwatch can be used in sports, soccer, referee, sports or for timer activities with family or classroom Neck strap design: You can wear it on your wrist or neck with these portable digital stopwatches with lanyard design hang without carrying it in your hands even if you can tie it to your bag or backpack. This sports stopwatch is the good timing device for athletes, especially runners, coaches and refereesProducts from GuanGuan's store