escription:With LED Indicator + 2 Level Indicators: (Horizontal and Vertical)Minimum Emission Angle ≤7 DegreeMaximum measuring range: 0.55m to 18m 2 Feet to 60 FeetPortable design， easy to carryLCD Display ，easy to readDirectly conversion of imperial and metricInstantaneous or continuous measurementAccuracy ±0.5%Size: 72 x 75 x 33 mmPower: A23S 12V battery (Not include)Working Temperature 0°C to 55°CLaser beam: Wattage 1mW (mW =milliwatt)Note: When using it you just need one Level Indicator to keep the horizontal or vertical. Package inclued:1 X Ultrasonic Electronic Measurer1 x Instruction Manual (Battery not included)Note: This product is without retail package.