Product review (5 stars): It works and I am happy
Shipping was prompt; I received the unit in just a few days.  The installation took about 10 minutes and it is effectively removing the odor from my well water.  It is easy to use; just make sure you are running cold water and pull out the pin on the faucet attachment, then, to stop push the pin in.  When the water is on and the pin pulled out, it does leak a little water at the faucet connection.  I don't see this as a problem since it does not leak when the water is turned off.  At first, the unit dripped a little water after use.  I just tipped it to pour out any residual water; after a few uses, it no longer dripped after use.  From other reviews, I understand this is a one use unit.  There are no replacement filters; the whole unit is replaced.  With normal use, based on the manufactures specs, it should last a year.  The unit came with multiple faucet fittings to accommodate various faucet types.  The fitting on the unit worked fine with my faucet.  It is portable and seems like it would work for travel purposes as well.  All and all, I am happy with the unit; it is a quick and inexpensive fix for me.