I've got the latest Walker's as well. They hang around one's collar and they are directional. As others have said, they allow one to hear what's being said while others shoot, etc. I have lots of other hearing protection for the range, etc. These are the only ones I've tried that I will take hunting. While my hearing is plenty good enough for the hunting I do, one round from my 18", M1A Scout, and my ears will ring for hours. Eighteen inch barreled .308's with a muzzle brake do that to you.
If you get them, make sure you use the proper size inserts. And follow their direction for inserting them. The batteries seem to last one plus hours, but they will protect your ears even when they quit. E
