Night Vision: HD LCD backlit display, measurement data at a glance, easy to use in dark environment. Measuring Modes: 3-in-1 measurement, roller mode, 300m tape measure and 762m laser measurement. The error is as low as 0.01cm. It can measure any and all surfaces. No longer be limited to flimsy metal tape measures that can only measure straight surfaces. Roll Mode: Roll mode allows you to measure curves and different objects simply by rolling it on the surface, can measure any curved surface or irregularly shaped objects. Tape Measure: Flexible tape design, not easy to hurt hands, used in short-distance measurement, such as flat and circular surface, body measurement. Laser Measurement: Precision laser head, 762cm long-distance measurement, one-key detection, simple operation.