1. Heavy duty on/off switch 2. 360˙aluminum leveling base 3 point leveling base Ensures Accurate ? Measurements when leveling at 360˙ 3. Laser dot and line with protective sliding cover <5mw ? laser diode with an accuracy of:1/8″(3.2mm) 0-100' 4. Leveling adjustement screw leveling adjustment scrwe allows ? using the level without the rotary base 5. Adjustable aluminum tripod extends from 17″(43cm) to 46″(117cm) 6. Output power(max):1 mw class Ⅱ,5 mw class ⅢA US(class ⅢR EU) ? Wavelength:625-670nm 7. Batteries:2×1.5v AAA