Aluminum frame
magnetic bottom
The display flips over when the bottom faces up
The backlight is on automatically when in use, and automatically off in 15 minutes after use
The sea level is permanently set inside the chip, zero setting is not needed when battery is replaced
Buttons: ON/OFF, ZERO, absolute and incremental measurement
One AAA battery
Automatic power off in 5 minutes

Download Digital Level and Protractor Specifications