Features:1. The laser level can measure whether the plane is uneven or hanging pictures, and can make three kinds of lines: straight line, cross line and vertical line.2. There are horizontal beads on the laser level, which can measure whether the horizontal plane is horizontal.3. The laserlevel is equipped with a circle ruler.(2.5m, metric/imperial scale).4. There are scales(15cm,6 inches) on the edge of the laser level.5. Use this Multipurpose Laser Level for hanging pictures, installing shelving, laying flooring, hanging wallpaper and more.Notice:1.Actual color may be slightly different from the image due to different monitor and light effect2.Please allow 1-3cm deviation due to manual measurementDescription:Material: black model (ABS plastic + aluminum alloy); yellow model (ABS plastic)Color: black/yellow (refers to the appearance color of the product, both laser levels print infrared rays)Laser wavelength: 650nm-680nmBlack power supply: AG13 battery (1.5V button battery) with 3 batteries.Yellow power supply: use two AA batteries (included)Accuracy: 1mm