Cross Line Laser Accuracy +/-1/8 in @ 35 ft Battery Type AA Bluetooth Not Bluetooth Compatible Features Generates Two Lines on the Floor at a 90 Degrees Angle for Surface Layout Including Tile Stone Brick Carpet and Hardwood Flooring Projects Two Laser Beams Over Wet Mastic or Concrete Robust Housing with Metal Feet Simple One Button Operation Top Mounted Vials and Leveling Screws Includes Mounting Strap Bracket Case Number of Beams 2 Number of Planes 0 Number of Dots 0