This tool in an utility tool for you to use in your daily life or your work, this is small for you to carry it with you, the measuring time is very short, and with high measuring precision, it is worth for you to use it, come on and try it, it will not let you down. Features: It is small in size and easy to carry, you can even put it into your pocket to carry it, which is very convenient. With multi measuing mode, which can meet your variety of measurement requirements. With the fine quality laser head, which is quick and accurate to measuring, give you a better using experience. With the electronic horizontal function, digital display design in the screen, can easily find the horizontal angle. (This function only type3 and type4 has, the type1 and type2 not included this function.) It is also water and dust proof, with the hard cover, which is also drop resistant. It can be used for single measurement, continuous measurement, area measurement, volume measurement, pythagorean measurement, benchmark switching, maximum and minimum measurement. The type 3 and type4 with onekey angle measurement altimeter function, and the type1 and type2 not included this function. With three measuring units switch: Meter, feet and inch, you can choose the one you want to use. Specifications: Material: alloy Color: gray, gold (optional) Type: type1~type4 (optional) Measurement accuracy: 2mm Unit: m, in, ft Measurement range: 40m Battery: 1 * lithium battery, 150mAh (included) Laser class: II Laser type: 635nm