Doesn't meet my needs, but works as advertised

The groove+ works as advertised. My 3-star review is because it does not do what I had hoped, which is show me where my putter is aimed 10 or 12 feet away. The laser shows where the putter is aimed a foot or so in front of the club path, which is useful to show how I'm opening or closing the face or path, but I have other eyeline products (putting mirror and circuit tools) that accomplish this mechanically. I had hoped the laser would solve my issue that I think I fail to align my putter to may target that is 8-12 feet or more away. It doesn't do this, but doesn't promise to do this. I just thought it would / could do so. That's on me, not eyeline.

It just doesn’t help much. You can tell the same info by the way the ball comes off the putter

excellent