I have these on my keys, modem, purse etc.  The only problem is they make my set of keys much too bulky as they are not at all flat or even square.  They can be hard to attach and for some things, like a TV modem they need to be secured with tape.  The cover on the back battery has fallen off several times on various items.  The battery cover needs to be much more secure.

Update:  The seller was VERY responsive to my review and took the effort to contact me.  In that respect I will add another star as the seller thanked me for the suggestions.  I will add that they are excellent for finding items around the house (however I need to take them off my sets of keys (there are several, including a bulky car key) to fit them in my jeans, instead of having to put them in my purse). That I find as the only real drawback.draw back.  They are great for locating my purse, modem etc. around the house, which I never leave in the same place.  If they were flat I would also tape one on the back of my cell phone.  And in that regard, they don't use Bluetooth that drains ones cell phone battery which would be much appreciated!

Have used this many times to find my car keys

Helped finding my tortiose by letting them walk around the house A+ will buy again

We have needed it twice and it works perfectly beeping as you enter area where keys are

Thankful I purchased this item.

I got this set so that I could find my keys and my remote controls.  It works excellently but it can be too bulky to fit conveniently onto certain items.  It would be great if this technology could be incorporated into small items, but I am giving the product a 5 star rating because it is darn clever regardless of the size.

This is VERY loud the people complaining about the sound not being loud enough are either deaf or they were expecting a tornado siren out of a the fob.

Love this!!! I loose my keys all the time and having kids makes me nervous they will disappear.  This thing has saved me a couple of times already.

Love this product. I can find everything phone, keys, and my husband live finding his keys with the push of a button.

I wish this came with two remotes so I could have one at work and one at home. I worry about carrying it in my purse because of the loud noise it makes. Overall, it is great to use at home when I'm searching for my keys in a panic on my way out the door!