This is a high precision double bubble portable laser level to ensure the accuracy and stability of the measurement value. Features: Vertical and horizontal high precision double bubble, can ensure the accuracy and stability of measurement. Use two no. 7 battery Specifications, low power consumption, medium use can reach more than half a year. Its body is light and small, easy to carry, can work anytime and anywhere, is a good helper on the job, but also your good choice. It can play four kinds of lines, horizontal line, vertical bar, point, vertical line, which has a wide range of uses. Suitable for a variety of uses, such as paving tiles, installing carpentry on doors, Windows or furniture, etc. But not suitable for outdoor use. Specifications: Material: ABS Color: Yellow Wavelength of Laser: 500nm Line Width: 0.5-1cm Working Distance: 5m Working Temperature: 0-42 power supply: 2 * NO.7 Battery (Not Include) Package Size: 15 * 10 * 8cm / 5.9 * 3.93 * 3.14in Package Weight: 210g / 7.4oz Note: Please read the product manual carefully before use. Package List: 1 * Line Device 1 * Chuck 1 * Bracket