Rotary , Accuracy +/-1/4 in @ 100 ft, Battery Type AA, Bluetooth Not Bluetooth Compatible, Features Large and Small Scan Modes Achieve an Accurate Chalk Line, Rugged Housing, Scan Line can be Moved Clockwise or Counter-Clockwise, Simultaneous 90 Split Beam in Vertical Mode, Variable Rotation Speed, Includes Case, Glasses, Number of Beams 2, Number of Planes 0, Number of Dots 1, Number of Lines 0, Working Range with Detector - Maximum 800 ft WARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov. -