Portable: USB rechargeable ruler is small in size and light in weight, which is easy to carry and store without taking up too much space Material: durable aluminum alloy electronic ruler tape and stable, the silicone is durable and sturdy, which can be used for a long time Specification: The length measuring tool can support 99 meters long distance measurement, equipped with 8 functions, simple operation with three buttons Multifunctional: The digital tape measure is multifunctional, which can measure measurement by straight line, arbitrary curve measurement, irregular surface measurement, etc., meeting your use needs Long Standby: Digital Ruler LCD display is equipped with a USB cable, with charging direct lithium battery and 200 days standby