escription:Material: ABSMeasuring range: About 0.16 feet / 0.05 meters - 131 feet / 40 metersMeasurement accuracy: About 2 mm / 0.08 inMeasurement mode: Area/volume/Pythagoras theorem/continuous measurementMeasurement units: Meter/foot/inch (do not need to change unit every time, it will keep the final setting.)Self calibration: YesBattery: 200 mah li-ion battery, can measure distance for 2000 times, charging only takes half an hour.Buzz indication: YesStorage temperature: -25~60Operating temperature: 0~40IP rating: IP54Color: Black Package Included:1x Ultrared Rays Distance Meter1x USB Cable1x Instructions1x Lanyar Features:1. This accurate rangefinder can be used for family, building, industry, residence, warehouse, etc.2. It uses energy-saving and eco-friendly li-ion battery as power supply, and can measure distance for 2000 times after fully charged.3. The measuring device provides you with 3 different units, including meter, inch and foot, from which you can choose the appropriate unit for rapid measurement.4. Multi-core proceor and optical lens combination ensure significantly increased efficiency of measuring house, significantly reducing the workload.5. High definition back light, clear.Note:1.The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightne of your monitor and light brightne.2. Please allow slight manual measurement deviation for the data.