Description: This item is a must for home enthusiast that want to execute the job with speed and accuracy. It reduces all problems associated with accurate lining or leveling. Easy to use, compact and lightweight, it can help you easily to finish home-renovation project, as installing floors, framing, laying out tile, and hanging pictures, etc. Features: It can be used to hang pictures, install shelving for a right angle. Ideal for any job that requires a straight line or accurate measurement. Dual diodes for making 90 degree beams on any surfaces. Convenient for repairing at home. Can projects 2 lines: vertical line, horizontal line, cross line with an accuracy of 0.01. Specificaton: Material: ABS Color: Yellow, Red (Optional) Wavelength: 625nm-670nm Accuracy: 0.01 Beam Angle: Right Angle Power Supply: 2 x 1.5V 3A batteries (Not Included) Product Size: Approx. 118 x 70mm / 4.65 x 2.76inch Package Weight: Approx. 104g Package Included: 1 x Infrared Level Note: 1. Please allow 1-2 cm error due to manual measurement and make sure you do not mind before ordering. 2. Please understand that colors may exist chromatic aberration as the different placement of pictures. .