Description ●Self Leveling: projects bright horizontal & vertical lines onto flat surfaces and levels in few seconds ●One-button operation: easily selects among horizontal, vertical, and cross line modes ●Manual mode: locks the line and sets the level at any desired angle ●Leveling range: ±4 degree Technical Data Range 100FT/30M Accuracy ±3/16‘’@30ft（±5mm@10M） Battery 2xAA alkaline batteries Mount Threading 1/4"–20 Dimension 3.07x 2.48 x3.42in. （78 x 63 x 81 mm ） Weight 0.55lb(0.25kg)