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 * 83 * 30mm / 3.27 * 3.27 * 1.18in Item Weight: 155g / 5.44oz Package Size: 17 * 10 * 3.8cm / 6.69 * 3.94 * 1.50in Package Weight: 216g / 7.62oz Package List: 1 * Digital Protractor 1 * USB Cable 1 * User Manual (English)