Specifications Screen:Full view segment screen Screen rotation:180° Measuring range:4*90° Resolution:0.05° Accuracy:±0.2° Unit:angle/slope Auto screen off:2 minutes(angle change is less than 0.2°) Auto power off:10 minutes(angle change is less than 0.2°) Battery:Built-in 3.7V 400mAh Li-ion battery Charging: 5V 0.5A Type-C Operation time: Backlight off: 26H, Backlight on: 15H Operating temperature:-10°C to 50°C Product size: 62.2*62.2*32mm/2.45 × 2.45 × 1.26 inch Description 180° Reversible Digital Display: Our digital inclinometer is equipped with a large-sized, reversible, full-view LED display screen. Even in direct sunlight, it can display data in real time - whether indoors or outdoors, regardless of lighte conditions, it can enhance work efficiency. Four-sided Strong Magnetic Adhesion: This digital leveler has a magnetic design on all four sides, which can firmly attach to metal surfaces, enabling hands-free operation and allowing for calibration from multiple angles without sliding or shifting. USB Rechargeable and Automatic Shutdown: The inclinometer is equipped with a rechargeable battery and supports USB charging - it has a data retention function. It will automatically turn off the screen after two minutes (if the angle change is less than 0.2°) and automatically shut down after 10 minutes (if the angle change is less than 0.2°). This ensures smooth operation while also extending battery life and facilitating on-site use. Compact and Portable: This digital angle measuring instrument is small in size and easy to fit into your bag or pocket, providing great convenience. Features Full view segment screen 180°Automatic screen rotation 90°measurement in 4 directions High resolution 0.05° Full range,high precision±0.2° 2 units for angle/slope Built-in 400mAh Li-ion battery Strong magnets on 4 sides Data Retention Screen backlight