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 within a 39-hour range and allows recall. Alarm and mute function: Option to turn off the alarm sound and mute the device. Ideal for sports and football matches, suitable for coaches, training sessions, runners, adults, and children. Focused on high-quality items, with quality as a core value, this product 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 turn the alarm on or off. 2. How many modes are available? Four modes: Clock, Stopwatch, Countdown, Alarm Clock. Plastic film note: The protective 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 x 60 x 15 mm Package Contents: 1 x Stopwatch (with battery installed) Note: Light reflection and different monitor settings may cause slight color variation between the image and the actual item. Measurement allows an error of +/- 1-3 cm.