If you lose your phone, you can call with another phone and you will find it. But you have a BiG problem when you lost your keys, because you cannot call to your keys. My invention is very usefull if you have that problem often. It is a very easy and little thing, but you can't live witout it. Except when you never lose things. You have to write down what you lost and than the BiGbirona will seek for you where you left it. If you want you can buy one with music or you can put music on it. It works without batteries. So you never have to buy a new BiGbirona.
- It works without batteries