Works great when the site you're detecting is extremely hot, just clip it to your harness or front chest pocket.

If you detect in snake country, you need to hear them.  You already have 1 that comes with GPZ-7000, so hook it to your Left D ring on harness and hook this one on the Right side, so you can hear better as you turn your head.

Rubber flip over dust cover came off the charge port, most do but that has nothing to do with the operation of the wireless remote.

Some folks purchase 2 WM-120 remotes and clip one on each shoulder right near your ears.  A few folks enjoy detecting with more than 1 person, so having another WM-12 remote allows for others to learn and hear the detector.

New, these things cost almost $300 and you're getting this one for much less.