Chronograph with lanyard: high-quality ABS material, sturdy and durable. It works silently during normal use time and gives you a silent environment during use. It is a must-have for competitions, training and other sports. Reasonable design: The stopwatch is ergonomically designed and fits your hands. You will feel comfortable and flexible when you press the button; shockproof. Stopwatch display: The stopwatch can display calendar and clock, hour, minute, second, week, month, day, and 12/24 hours can be selected. Split mode: time single and split event. Freeze the split time display while continuing while totaling. Multi-function timer stopwatch: Lightweight, meet the requirements of most situations. Used as a stopwatch, clock, chronograph and alarm clock. Suitable for a variety of sports. Football, basketball, running, fitness, swimming, baseball, wrestling, taekwondo, etc. Product Name: Sports Stopwatch Color: black Material: ABS Size: 80x65x16mm Display screen: 35x18mm Weight: about 48g Timing accuracy: 0.01s Advantages and features: ABS material, scratch-resistant and wear-resistant, strong and durable. High-definition large screen design, clear definition at a glance. Flexible buttons, easy to operate. Use function steps: 1. View the date: In the time function interface, press the B key to display 2. View the alarm time: In the time function interface, press the C key to display 3.Alarm function: In the time function interface, first press the C button and then press the B button to turn on or off the alarm function, and the symbol will be displayed when it is turned on. 4. Hourly timekeeping function: In the time function interface, first press the C key, then press the A key to turn on or off the hourly timekeeping, and the week indicator will be displayed when it is turned on. 5. Repeat alarm function: When the alarm starts to ring, press the B button (repeat the alarm function after 5 minutes), and press the C button to cancel. Note: The longest measurable interval time is 9 hours. When the tested time is less than 30 minutes, the minimum display unit is 1/100 second. When the tested time interval is greater than 30 minutes, the minimum display unit is seconds.