【Excellent Waterproof Performance】This digital watches has excellent waterproof performance. It has IP6 waterproof rating certification, which means you don't have to worry about damage to the stopwatch from sweat, rain or accidental splashes.Stop watches can cope with various weather conditions and keep in good working condition. 【Accurate Timing】This digital watch men is equipped with a high-precision movement, which can provide millisecond-level timing accuracy, ensuring that every timing is accurate. Whether it is a short sprint or a long-distance endurance race,stopwatches can provide you with reliable timing data. 【Durable】This watch digital for coaches pays special attention to its durability. The shell is made of high-strength material with excellent impact resistance, and it can remain stable even during strenuous exercise. In addition, the stop watches for coaches is comfortable to wear and not easy to slip, suitable for long-term wear. 【LED Backlight Display】In order to facilitate use in low light conditions, this black waterproof referee watch is equipped with a high-brightness LED backlight display function. Just a tap to light up the screen,black digital referee watch allows you to clearly see the time at night or in a dim environment. 【Widely Used】This match official timer with stopwatch watch is designed for various sports, whether it is track and field, swimming, football or basketball, it can meet your needs.Stopwatch wrist has multiple timing modes, suitable for different types of training and competitions, helping you better grasp the training progress and competition rhythm.