eufy Security SmartTrack Card Bluetooth Item Finder and Key Finder, Works with Apple Find My (iOS Only), Up to 3-Year Battery Life, 2.4mm Thickness, Find your Wallets, Purses (Android Not Supported)\n\n--Works with Apple Find My: Use the pre-installed Find My app and add SmartTrack Card item finder to the Items tab. (*Note: Android devices are not supported.)\n--Ultra-Loud Alarm: Despite being only 2.4mm thick, Card can sound an alarm so loud you can hear it even if it's covered.\n--Water-Resistant with Non-Replaceable and Non-Rechargeable Battery: Card can last up to 3 years and is safe even in the rain with its water-resistant coating.\n--Free Left-Behind Alerts: Avoid losing your belongings with instant alerts via the Find My app\u2014with no added fee.\n--Find Your Phone in Silent Mode: Your phone rings even in Silent mode with just a double tap.\n--Share with Everyone: With the eufy Security app, you can let others know the location of your items too. *Note: Android devices are e