Feature:1. The M series has double photosensitive apertures, and the stability of the highaccuracy large optical lens is significantly improved.2. The twocolor mold encapsulates the plastic shell, which has a better hand feeling and is convenient to hold the measurement data3. Easy to use, one person can complete the work in a few seconds.4. The measurement is accurate, and the infrared rangefinder provides fast, easy and accurate measurement.5. Very suitable for interior decoration, decoration, floor and wall materials, real estate appraisal.Specification:Item Type: Laser RangefinderMaterial: PlasticInstrument Size: Approx. 117x52x27mm / 4.6x2.0x1.1inProduct Model: M50Measuring Range: 0.05~50mMeasurement Accuracy: 2mmLaser Class: 2M IILaser Type: 620-690nm, <1mWArea: YesVolume Measurement: YesMeasurement of Pythagorean Theorem: YesAddition and sUbtraction: YesTracking Measurement: YesMaximum and Minimum: YesBacklight: YesPrompt Tone (can be turned off): YesData Deletion: YesData Storage: 20 GroupsDust and Water Splashing: IP54Operating Temperature Range: 0~40Storage Temperature Range: -20~65Battery Life: >5000 timesPower Supply: 2 x AAA LR6 1.5V (Battery not Included)Automatic Laser Shutdown: 30sAutomatic Power off: 3minHow to Use:1.When the measurement distance is within 10m, the measurement accuracy is 2mm; when it is greater than 10m, the measurement accuracy is calculated as follows: 2mm0.05 x (D-10) (D: measurement distance, unit m)2.When measuring targets with poor reflectivity or very rough surfaces, or the ambient temperature is too high or too low, or the ambient brightness is too bright (for example, in the sun), the deviation will be disadvantageous. Please read the manual carefully before operation..Package List:1 x Laser Rangefinder(Battery not Included)1 x Lanyard1 x Manual Note:1. It is forbidden to open or repair the equipment.2. It is forbidden to measure in the sun.3. It is forbidden to go beyond the specified range.4. It is forbidden to immerse the equipment in water.5. It is forbidden to use ethanol or any other organic solvents to clean the lens.6. It is forbidden to wipe the lens directly with fingers or other rough surfaces.7. It is forbidden to supply power to the equipment exceeding the rated DC voltage.