Is the green beam worth it over a red laser?

Green light is brighter to the eye, so the lines are easier to see across a lit room or at a distance. In direct sun both colors wash out, and a detector is still the answer outdoors.

How far does it reach?

The bare lines are meant for indoor room distances. With a compatible detector the working range extends to about 165 ft, but the detector is not included.

Does it work outdoors?

Only with a detector. Sunlight overpowers visible laser lines, so outdoor use depends on a detector and a target card.

What comes in the box?

The laser itself with its housing. A detector, tripod or mounting bracket are separate purchases, so check what your kit includes before relying on long-range or hands-free use.

Is it good for a full room layout?

It handles square, level and plumb lines on one wall plane at a time. For wrapping lines around a whole room, a 360-degree laser is the better tool.

Can it survive a drop from a ladder?

DeWalt rates the housing for a 1 m drop, which covers most waist-height knocks. It is not indestructible, so treat it as job-site tough rather than drop-proof.