BSIDE S4 AC Voltage Induction Charging Smart Pen, S4 (Extra Sharp Nib), S4 (One Word Pen)

1. Display: LCD display
2. Sampling rate: 0.5 seconds
3. Mileage: 12-300V
4. Resolution: 1V
5. Accuracy: -+5.0%
6. Alarm mode: analog bar, backlight and buzzer
7. Automatic shutdown time: about 5 minutes
8. Working temperature: 0-40 degrees Celsius
9. Storage temperature: -20 to 60 degrees Celsius
10. Power supply: built-in 3.7V 400mA lithium battery
11. Working height: 2000m
12. Equipped with LED flashlight, no fear of darkness