JQ40 Digital Handheld Mini Laser Distance Area Volume Meter Portable Rangefinder 40M Features: This accurate rangefinder can be used for family, building, industry, residence, warehouse, etc. It uses energy-saving and eco-friendly li-ion battery as power supply, and can measure distance for 2000 times after fully charged. 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. Multi-core processor and optical lens combination ensure significantly increased efficiency of measuring house, significantly reducing the workload. High definition back light, clear and bright. The screen backlight will automatically turn on during measurement, making measured data show more clear, which is convenient e and will turn off in 15 seconds if no operation. IP54 resistance to splashing water and dust allows it to be used in different construction environment, protecting the electronic components from corrosion damage, quite durable. Specification: Model: JQ40 Material: ABS Measuring range: About 0.16 feet / 0.05 meters - 131 feet / 40 meters Measurement accuracy: About ±2 mm / ±0.08 in Measurement mode: Area/volume/Pythagoras theorem/continuous measurement Measurement units: Meter/foot/inch (do not need to change unit every time, it will keep the final setting.) Parameters: Self calibration: Yes Battery: 200 mah li-ion battery, can measure distance for 2000 times, charging only takes half an hour. Buzz indication: Yes Storage temperature: -25℃~60℃ Operating temperature: 0℃~40℃ IP rating: IP54 Color: Black Package list: 1 * Laser Rangefinder 1 * User Manual 1 * USB Cable 1 * Wrist Strap Note: * It is suggested to be used indoors. * Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard. * Please allow slight data measurement deviation.