Features: ☆ Found keys, phone, wallet.. ☆Easy to carry and use，handy like a key ring ☆ As camera shutter for self-portrait capture the happiest moment easily In order to use the product,your device will need both of the following： 1tooth4.0 28.0 and higher， Android 4.4 and higherR ON/OFFPower On： Hold down the tracker’s function button for at least 3 seconds. You will hear two beeps， the tracker is now powered onr Off： Hold down the tracker function button for at least 3 seconds. You will hear a long single beep. The tracker is now powered offification: Material: ABS Size: 1.5″x1.5″ (38*38*7mm) Bluetooth anti lost:The maximum range of the distance is 25m Color: Red green blue white APP: isearching/Kindelf Get The Key finder, your best travel buddy for a peace of mind. Happiness is when you found something you lost!