Smarson Wireless Bluetooth Key and Phone Finder, App iOS 7.0 and above, Andriod 4.4 and above Compatible Locate Lost Items: Within seconds track and find any personal valuables that you've misplaced or have gone missing. Even if your phone is on silent, device alarm will sound Easy to Use App: Visually track and record current and historical locations of your belongings on either Google or Apple maps. Software is compatible with iOS and Android devices Custom Ranges: Have the ability to set the safety range, which puts the device in a muted state, and out of range, activating the alarm feature. Out of range distance can be set from 0-30 meters in app. When utilizing finder with your smart phone, both phone and tracker will alarm Finder is perfect for electronic devices, such as smart phones, tablets, and camera, and can even be used to track other important items, including purses, luggage, and even pets. Comes in 5 different colors, black, white, blue, purple, and pink, allowing you to assign trackers to different valuables without confusion Compact Design: Finder has a small footprint, weighing only 5 grams and measuring 31x31x5.4mm. CR2016 battery has a standby lifespan of 12 months, making it extremely dependable. Easily attach to key rings and bags with included steel ring