Global Cloud Positioning Works with both Apple Find My (iOS) and Google's Find Hub (Android). Attractive Color Options Offered in four stylish shades: Black, White, Pink, and Blue. Clear Alert Tone Integrated speaker enables fast locating. Left Behind Notification Alerts you roughly 5 minutes after you depart (iOS devices only). Swappable Battery Operates on a standard CR2032 cell. IP68 Waterproof Completely shielded from dust and water submersion. No Extra App Needed Relies on built-in tracking apps for iOS and Android