It has a three-position rotary selector: clockwise tightening, counterclockwise loosening, and fixed without rotation of the selector.

It has 12 bits stored inside. It is not particularly heavy, but obviously heavier than a regular screwdriver. The bits include straight, Philips, and torx (star) in different sizes. The magnet that holds them is good, not too strong that you can't remove them, but strong enough to keep them securely in place without worrying about them falling. In fact, if I see correctly, there are multiple magnets. There is one that holds the bit in the base, but there are also others around.

The plastic construction doesn't seem cheap, but I can't judge its long-term performance and quality as I just got it. However, for not having to carry 2-3 screwdrivers to do your job, and having the ability to have them all together in one without extra cases, etc., it seems excellent for now.