❤ There is a special backlight control switch, which is for saving battery ❤ Adopt four AA batteries for power supply, when the battery voltage is lower than the specified value, it will automatically prompt ❤ Sturdy and exquisite structure, the whole machine adopts and optimal electronic components, and the shell is light and hard ❤ Using microcomputer technology (CPU) to make the measurement more accurate ❤ Large-screen LCD display with backlight to clear readings and no parallax, Manufacturer: SkyPOOU