LAOPAO 2 Lap Metal 1/100 Second Accuracy Stopwatch with Backlight Features: 1. Professional stopwatch 2. Alarm clock 3. Extra large digital screen with big digit display. 4. 1.Hours, minutes, seconds, day of the week, month and day. 5. Smart battery saving after no operations. 6. Daily waterproof. 7. Silent mode with no alarm or BEEP at all is optional. Package: Stopwatch*1 User manual*1