Nedis SmartLife trackers with Bluetooth allow you to easily find valuable things such as wallets, bags, keys, suitcases or even your mobile phone, but you can also use them to track your children or pets and prevent them from going missing. The small compact tracker (ø 39mm) with Bluetooth 4.0 technology works within a radius of up to 50 meters. How does it work? If you have lost your keys with the tracker connected, press the button in the free Nedis SmartLife app and the key finder will start playing a sound so you can easily find it. But it also works the other way around. Suppose you can't find your mobile phone. When you press the button on the tracker once, the phone starts making sounds, even when it's set to vibrate or silent mode. Set alarms in the Nedis SmartLife app. You can set an alarm to alert you when your phone loses connection to the tracker. This way, you'll never lose or forget your valuables again. When the tracking device is out of Bluetooth range on your mobile phone, the Nedis SmartLife app will show you the last location where you are still close, so you know where you have left them. And if you still can't find it, you can always share the product in the program with others so they can help you. You can set 6 different ringtones in the key finder and the volume can be set to 2 levels.