1、The M series has double photosensitive apertures, and the stability of the high‑accuracy large optical lens is significantly improved. 2、The two‑color mold encapsulates the plastic shell, which has a better hand feeling and is convenient to hold the measurement data 3、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. Item Type: Laser Rangefinder Material: Plastic Instrument Size: Approx. 117x52x27mm / 4.6x2.0x1.1in Product Model: M50 Measuring Range: 0.05~50m Measurement Accuracy: ±2mm Laser Class: 2M II Laser Type: 620-690nm, <1mW Area: Yes Volume Measurement: Yes Measurement of Pythagorean Theorem: Yes Addition and sUbtraction: Yes Tracking Measurement: Yes Maximum and Minimum: Yes Backlight: Yes Prompt Tone (can be turned off): Yes Data Deletion: Yes Data Storage: 20 Groups Dust and Water Splashing: IP54 Operating Temperature Range: 0~40℃ Storage Temperature Range: -20~65℃ Battery Life: >5000 times Power Supply: 2 x AAA LR6 1.5V (Battery not Included) Automatic Laser Shutdown: 30s Automatic Power off: 3min How 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: ±2mm±0.05 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. 1 x Laser Rangefinder(Battery not Included) 1 x Lanyard 1 x Manual