Air Tags-4 Pack for iOS Device Smart Tag Bluetooth GPS Tracker Luggage Tag Item Tracker, Key Finder and Item Locator. Find Nearby: You can use the Apple "Find My" app to find your items by ringing your air tags through its built-in speaker (loud ringing, 80-100 dB), or just ask Siri for help. (Note: This product only supports iOS devices, not for Android) Find Far Away: With the Find My Network that connects hundreds of millions of iOS devices around the world, you can find your item's location by tracking the air tags 4 pack within its 50-meter Bluetooth range. Or you can use the map navigation in Find My if it's out of the Bluetooth range. The anonymous and encrypted Find My Network feature protects your privacy. Instant Lost Remind: Once the luggage tags are connected with your items by its iOS Find My app, the items are located 24/7 with your iOS device and your Find My app will send you the notification immediately if the items are lost. (No monthly or annual fees) Replaceable Battery: The tag tracker is powered by CR2032 coin cell batteries with a 1-year battery life. When the battery runs out, the tag locator will notify you to replace the battery, and its removable design allows you to replace the battery easily. Easy Pairing: By using the iOS device's Find My app and its Bluetooth, you can connect the air tags-4 pack with your items by clicking on “Items” and then click “Add Item”, then select “Other Supported Item,” and follow the in-app instructions to complete the pairing. (Note: Please remove the plastic insulation piece before turn on the tracker) Multiple Usage & Privacy: The smart tag is a great item tracker for your keys, wallet, luggage, bicycle, suitcase and many other things. With the 4 keychains along with the item finder, you can attach it to almost anything secretly. The air tag's location data is not stored on the entity but only on your own iOS system. The tag tracker's Find My Network is anonymous and encrypted, it is always safe to use the smart tag as a tracker and locator.