Laser Guided Marker/level With Fda Approved Wave Length- 640-670nm (class IIa). Equipped With 3-way Beams From The Top, Left And Right. Many Do-it-yourself And Professional Household And Handyman Tasks Will Be Made Much Easier With This Laser Level. Measures 8" X 5.5" (approx.) Comes with a 9V Battey

* Great For Hanging Pictures Straight

* Perfect For Lining Up Wallpaper Rows, Ideal For Laying Floor Tiles

*Projects horizontal and vertical lines

* Maximum Power < 1mw

*Class Iia Product, Comes with a manual / User Guide