APP connection: Apple Find My network connection for global positioning searchShell: ABSBattery: CR2032 button battery (replaceable)Battery capacity: 230mAhStandby time: 10-12 monthsProduct size: 38.5 * 32 * 8.5mmProduct weight: 7.8gAccessories: buckle * 1System requirements and compatibility:1. AppleID installation 2. iPhone and iPod touch models with iOS14.5 or later3. Install iPad models with iPad OS 14.5 or later