USAMS ZB253 iOS Mini Ultra-thin Card Type Anti-lost Device Location Tracker 1. 3mm thick and lightweight at approximately 8g, it's easy to carry. 2. Simply speak to Siri and the tracker will beep, making it easier to find your item. 3. Open the "Find" app on your phone and use a map to quickly locate your lost item. 4. Compatible with all Apple devices. 5. When the device is too far from your phone or disconnected, the app triggers a "Lost" notification and provides the last location information, allowing you to quickly find your item. 6. Bluetooth 5.3 delivers fast transmission and low data latency, enabling high-precision, real-time positioning. 7. IP68-rated water and dust resistance, making it easy to withstand all weather conditions. 8. Material: ABS 9. Battery Capacity: 80mAh 3.7V 0.296Wh 10. Wireless Charging Power: 0.375W 11. Charging Time: 1.5 hours 12. Bluetooth Version: 5.3 13. Beep Volume: Greater than or equal to 70dB 14. Dimensions: 44.4 x 33.1 x 3mm 15. Weight: Approximately 8g