Item Type: Laser Distance Meter Material: ABS Model: LDM-80C Battery: Rechargeable Lithium Battery 3.7V 1500mAh (Included) Uses: Indoor Home Improvement, Construction, Furniture Basic Parameters: Test Range: 0.05~80m (0.16~262 inches) Measurement Accuracy: Typical Value: ±1.5mm Accuracy Class: II Minimum Value Display: 1mm / 0.04in Unit of Measurement: m, in, ft Laser Safety Standard: Class II Laser Type: 635nm, <1mW Laser Beam Diameter(B): Approx. 9mm / 0.35in (at a distance of 10m / 33ft) Approx. 45mm / 1.77in (at a distance of 50m / 164ft) Inclination Sensor Range: ±90° Accuracy of Tilt Sensor: ±0.5° (with laser beam) (C) Standard Deviation: ±0.5° (with the shell) (C) 1、Good Function and Battery Powered: Fast measurement, accurate reading, mm level measurement, sensitive response, intelligent voice broadcast. Lithium battery USB fast direct charge, continuous 10,000 measurements. 2、High Accuracy: 2 way horizontal bubble, built in ±0.5°accuracy tilt sensor, can clearly display the real time deviation angle. ±1.5mm measurement accuracy, record and display the maximum and minimum values. 3、Optical Focusing Lens: Imported optical lens, high performance laser module, accurate and stable measurement, fast and low power consumption. 4、Double Photosensitive Apertures: Enhance optical compensation, water accumulation at the core of the phase optical system for distance measurement, enhanced laser emission and reception capabilities. 5、Data Memory Storage: Makes it more convenient to check data; after measuring multiple times, you can check data at any time, up to 99 groups of memory storage. 1 x Laser Distance Meter 1 x USB Data Cable 1 x Lanyard 1 x Manual