1)Laser Guided Leveler Projects 50 Foot Line

2)Built in Leve Bubbles，

3)Reusable Adhesive Adheres to Any Surface， Leaves No Markes

4)Projects a Perfectly Straight Line on any Surface

5)2xAAA Batteries， Not Included

6)Dimensions:123x40x63mm

7)Weight:3.96oz(112.1grams)with batteries and pins.

8)Accuracy:+/-0.55"@30feet(+/-1.4mm per meter)

9)Laser wavelength:625~670mm

10)Housingt:Plastic