- Size: Diameter: 31.9 mm Height: 8.0 mm Weight: 11 grams- Splash, Water, and Dust Resistance Rated IP67 - Connectivity: Bluetooth for proximity finding- Apple-designed U1 chip for Ultra Wideband and Precision Finding- NFC tap for Lost Mode- Speaker: Built-in speaker- Battery: User-replaceable CR2032 coin cell battery- Sensor: Accelerometer- Accessibility: The Find My app is compatible with these iPhone accessibility features: VoiceOver, Invert Colors, Larger Text, Compatibility with braille displays- System Requirements and Compatibility: Apple ID, iPhone and iPod touch models with iOS 14.5 or lateriPad models with iPadOS 14.5 or later- Environmental Requirements: Operating ambient temperature: -4� to 140� F (-20� to 60� C)