DetailsLaser Focus Laser Light measuring tape. Easy to use and measure any area up to 100 ft. The built-in laser light will register accurately all the measurements and temp store it on the screen so you can jot them down.Rugged construction and easy-to-read LCD screen. Power with 1 9v battery (not included). A device needed for every home. Details - Measuring Tape with Laser light Measure up to 100 feet distance. Feet/meter unit choose switch. Area and volume calculation Addition and subtraction functions Memory clear function Certificate - Certified by CE Automatic power off Temp store measurements on the screen to jot them down. Works on 1 X 9volt battery (not included)