Instruction: Answer the given question using the supporting document.

Input:
Question: Hi, for my application, I need to know the dimensions of the key 'fobs'.  Thanks and all the best, J
Document: Service was very fast and came to my house well packaged. These key finders are the best that I have ever found! They are small and easily placed on my TV remotes or key chains. I was very impressed with receiving extra batteries! This will save me time and frustration when I do need a new battery. ONE IMPORTANT NOTE...READ and follow the directions and your device will work wonderfully! These would make GREAT Christmas gifts!
Also other info., has been included. This is by far one of the very few, best customer service provided in a long time. There are more people coming around to the need of good customer service and I am finding many of them here on Amazon. If you are in need of one of these items I very much, hands down, recommend this one,&#34; Where's the Remote?&#34;
He loves it, he has only needed to use it once up to now but I know he will need it more! I got tired of him misplacing the keys and practically turning the house upside down looking for them, so I saw this on Amazon and knew it was what he needed.
I think. Maybe I'll get another one for my library card. I might need one for all my things.Anyway, kidding aside, this thing works great, now that I know ow to use it - and the seller is, I think, the nicest on all Amazon if not the whole world. She writes follow up emails to ask how you like it. The truth is the first set I ordered I became frustrated with it because it didn't seem to be working right so I just threw it away.
I'm at a point in life where my memory is not at it's best and the &#34;Where's my Remote&#34; has been a blessing. I have one unit on my cell phone and the other on my  key chain. They have worked flawlessly from the moment I received them. For me they have been a wonderful assist in my everyday living.
Thanks for an easy to use key finder that works and makes a great gift!
It started randomly beeping shortly after I got it. I took it off my key chain. I never actually lost my keys while I had it on the key chain, so I don't know if it works to locate keys.
We immediately heard the beeping from the receiver. As we traced the beeping, we found the keys in the garage on one of the many shelving units and not in its appropriate place...on the key ring wall holder!!! This item is life saver!!! Not only would I recommend it, but I think that I need to buy more!! !
Not any longer.I was looking for a key finder, and this had great reviews.I have used it once when my companion was running late and could not find her set of keys. It worked well and saved time.I did notice between the two recievers, one beeps five times, the other eight. Be curious to know if that is how other sets works as well.
This was what we needed! Debby, the seller and inventor, walked me through how to program the key finder when I thought I had a defective model. I simply didn't press and hold the buttons to program each receiver long enough (don't just hold and let go, but hold and wait until it keeps beeping).Now that I know how easy it is to use these, we are THRILLED with this product.
Answer: About 1 1/8" X 2 1/8" X 3/8"