Electrical levelling instrument is a portable tool which can measure the tilt angle quickly and accurately. Note: Size and color may be slightly different due to manual measurement and different light conditions. Thanks for understanding. Specifications: Color: Yellow Material: Plastic 43 Electronic Components 43 Magnet Display: 2.4 34 Color Screen Accuracy: 0.02 Measure Range: Single Axis 360, Dual Axis 60 Buzzer: Yes LED Indicator: Blue Power Consumption: 0.2W Built-in Battery: 3.7V 1200mAh Li-ion Battery Work Temperature: -10-40 Item Size: 83 x 83 x 30mm or 3.27 x 3.27 x 1.18in Item Weight: 155g or 5.44oz Package Size: 17 x 10 x 3.8cm or 6.69 x 3.94 x 1.50in Package Weight: 216g or 7.62oz Package List: 1 x Digital Protractor 1 x USB Cable 1 x User Manual (English)