1. Function: stopwatch, clock, date, alarm clock, countdown, metronome, shutdown, mute 2. Power supply: contains a CR2032 button battery 3. Memory: 3 rows and 10/30/60/100/120 memories 4. Dimensions: about 7.8x6.8x1.5cm in shape, about 3.5x2.35cm in display 5. Weight: about 60 grams Features: 1. High-definition display large screen, easy to read 2. Acrylic mirror surface, soft light, clear vision, good toughness, easy to clean 3. ABS material, shock and drop resistance, corrosion resistance, matte texture, comfortable grip 4. Four-button operation, comfortable and convenient, free mode switching 5. Lightweight and portable, the keys are sensitive and not stuck 6. Contains CR2032 button battery, which can be replaced by yourself 7. The results are automatically stored and can be viewed at any time
