LED backlight clearly displays screen information in low light conditions. A protective plastic film is included on the screen to safeguard the display. Multi-function: Features stopwatch mode, time mode, countdown mode, and alarm function. Split recall memory: Stores up to 2 lap times with a recall capacity of up to 39 hours. Alarm and mute function: Allows turning off the alarm sound and volume. Ideal for sports and football matches, suitable for coaches, training sessions, runners, adults, and children. Committed to high-quality products; quality is our priority. This stopwatch delivers reliable performance. Stopwatch Instructions: 1. How to turn on/off the alarm? Press the "M" button to switch from "Clock" mode to "Alarm Clock" mode, then press the "S" button once to activate or deactivate the alarm. 2. How many modes are available? Four modes: Clock, Stopwatch, Countdown, Alarm Clock. Plastic film: Can be removed before use or left on the screen as it does not cause significant visual interference. Color: Silver Material: Metal Size: 74*60*15mm Package Contents: 1 x Stopwatch (with battery installed) Note: Only the items listed above are included. Light reflections and differences in display screens may cause slight variations between the color shown in the image and the actual product. Measurement error allowed within +/- 1-3 cm.