Product description: Material: ABS Color: yellow, red (optional) Laser wavelength: 650nm-680nm Beam angle: Right angle Power supply: 2 x 1.5V AAA batteries (not included) Product size: About 118 x 70mm / 4.65 x 2.76inch Package included:1 x Infrared Laser Level Application: The infrared laser level can be used for hanging pictures and installing shelves at right angles. It is ideal for any job requiring a straight line or precise measurement. Easy to use: The dual diodes of the infrared laser level meter can generate a 90 degree laser beam on any surface. High quality material: The infrared laser level is made of high-quality ABS material, which has excellent dimensional stability, durability and long service life. Specifications: The infrared laser level meter can project 2 lines: vertical line, horizontal line, cross line, accuracy 0.01. Laser wavelength: 650nm-680nm. Food : 2 AAA 1.5 V batteries (not included).