Diameter: 31.9 mm
Height: 8.0 mm
Weight: 11 grams
Water and dust resistance: IP67 rated (maximum depth of 1 meter for up to 30 minutes)
Connectivity: Bluetooth for proximity finding, Apple U1 chip for Ultra Wideband and precise finding, NFC for Lost Mode
Speaker: Built-in
Battery: User-replaceable CR2032
Sensors: Accelerometer
Compatibility: Requires an Apple ID and devices running iOS 14.5 or later, or iPadOS 14.5 or later