Features:Compared with traditional tape measure, this laser tape measure combines 40M laser measure with 5M tape measure, which brings extreme convenient to meet your different measurements.La ser measurement accuracy: 0.001m,It's available to operate continuous measure, accurate distance can be read within the effective range while moving.USB lithium-ion battery is charged directly, and lasts for a week after one hour of charging.Press the "FUNCUNITS" for key to switch the mode of la ser tape measure, followed by area measurement, volume measurement, Pythagorean measurement, double Pythagorean measurement to satisfy your all needs.Manual lock Settings, it won'for t hurt your hands, for always keep safe while working.LCD display with backlight digits for easy to read clearly even in the for case of insufficient light. Specifications:Material: ABSSize: 80X73X45MM/3.1x2.9x1.8 inches Note:Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes:1x Measuring Tape