Why settle for one beam when you can get more? The Argon Laser Putter ($70) utilizes a three-laser system to help improve your game on the green. The three-laser setup allows for better alignment and read of the terrain using two lasers positioned at ground level and the third in the middle of the club face. The Argon is also powered by one 9-volt battery giving off a brighter beam compared to other laser guided putters running on tiny watch batteries. [source]
Argon Laser Putter