Tellegloww 40 Pcs Digital Stopwatch Timer Bulk Large Display Multi-Function Electronic Stop Watch with Calendar Clock for Swimming Running Sports Training Coaches Referees Teachers(5 Colors)

["Sufficient Quantity: you will receive 40 stopwatches in 5 colors: black, red, orange, blue and green, 8 pieces of each color; Suitable for group training or competition scenes, the large display is clearly visible, and the lanyard design at the end is easy to carry","Suitable Size: the stopwatch measures about 2.56 x 2.76 x 0.79 inches/6.5 x 7 x 2 cm, which can be hung around the neck or held in hand; It is light and easy to carry without feeling tired; It is an ideal timing tool for athletes, referees, teachers, and fitness enthusiasts","Material: this waterproof stopwatch is made of ABS and PS plastic materials; It only needs 1 AG13 button battery for power supply; It is effectively shockproof, non-slip, durable, and adaptable to high-intensity sports environments, bringing you a pleasant use experience; Note: it has a certain degree of waterproofness, but it is not completely waterproof; Do not immerse it in water; For safety reasons, keep small screwdrivers and spare button batteries out of reach of children","Easy to Use: this digital stopwatch is easy to operate, with 3 buttons to control reset, switch, and start or stop mode; It has accurate timing functions, with week display and alarm functions, which are convenient for quick and easy positioning and operation during practice or competition","Wide Application: this sports stopwatch is an ideal tool for athletes, coaches, trainers and sports enthusiasts who pursue accuracy; It is suitable for most ages and levels, and can be applied for swimming, running, training, football, track and field, horse racing and other sports"]