Product details:
Horizontal and vertical line modes - projects two lines independently or together for a wide array of level and/or alignment applications One button operation - easily select between horizontal, vertical, and cross line modes or turn the tool on/off Flexible mounting device - conveniently clamps to multiple surfaces for quick and easy setup Smart pendulum leveling system - self-levels, senses and indicated out-of level condition; switch slider to lock for transport Includes: MM 2 Flexible Mounting Deviceand AA Batteries