Features:1.Material: high-quality ABS material, mini appearance, portable and portable2.Functions: single measurement, continuous measurement (maximum/minimum), area and volume measurement, Pythagorean theorem function, addition and subtraction measurement, unit conversion, data clearing, battery power display, measurement reference selection.3.Laser automatic shutdown: 30 seconds, instrument automatic shutdown: 180 seconds, stored data: 20 groups,4.Distance unit: M/ft/in; Area unit: m ²/ ft ², Laser type: 620-690nm,5.Applicable to multiple scene modes. Parameter:Maximum measuring range: 40M.60M.80M.100MMeasurement unit: meter/inch/foot/foot+inchAutomatic laser off: 30 secondsAuto meter off: 180 secondsMeasuring range: 0.05~40M, accuracy ± 2mm,Laser grade: secondary laser<1mW,Working temperature: 0-40 ,Storage temperature: - 20~65 ,Battery: alkaline AAA 2 * 1.5V, (excluding battery)Measurement times:>5000 times,Double blister Package include:Range finder * 1+hand rope * 1+manual * 1Battery not include Reminder:1. Please do not look directly at the beam.2. Please keep it out of reach of children.3. The instrument components must be kept clean at all times. Please close them before cleaning. When there is dust on the laser transmitting port and receiving lens, use a soft cloth with cleaning water or neutral screen cleaner, and then wipe it. Do not use acid or alkaline detergent for cleaning; In addition, do not use alcohol or other solvents for cleaningThe instrument shall not be waterproof, wet or placed in water.