LED backlight clearly displays screen information in low light conditions. A protective plastic film is included to help safeguard the screen. Multi-function: 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: Easily turn off the alarm sound and mute the device. Ideal for sports and football matches, suitable for coaches, training, runners, adults, and children. We focus on high-quality items. Quality is our priority, and this stopwatch delivers reliable performance. Stopwatch Instructions: 1. How to turn on/off the alarm? Press the "M" button to switch 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: Remove before use, or leave in place as it causes minimal visual interference. Color: Silver Material: Metal Size: 74 x 60 x 15 mm Package Contents: 1 x Stopwatch with battery Note: Only the items listed are included. Light and display differences may cause slight color variations between the image and the actual item. Measurement error allowance is +/- 1-3 cm.