V55 20000mAh Multifunctional Waterproof Livestock Locator Tracker 1. Operating system: RTOS 2. Chip platform: ASR3603S 3. Main frequency: 832MHz 4. Architecture: One-core ARM Cortex-R5 processor 5. Number of cores: single core 6. Standby mode: single card 7. Voice program: - VOLTE: support - CA: not supported - CSFB: support - SG-LTE: not supported - SV-LTE: not supported - SRLTE: Support - EmBMS: not supported - Video call: support 8. Chip ICSupplier: Built-in 9. Memory type (ROM\RAM): NOR 10. Memory capacity (RAM+ROM): RAM 128Mb+ built-in ROM 196Mb 11. External memory card\type: not supported 12. External capacity expansion: not supported 13. Extended memory hot swap: not supported 14. GPS chip receiving sensitivity: tracking: -163dBm, capture: -147dBm 15. GPS positioning accuracy: 5-15m 16. GPS antenna: LDSFPC 17. Storage temperature: -20 to 70 degrees Celsius 18. Working humidity: 5% - 95% non-condensing 19. Charging current: 5V2A 20. Size: 0.42 inches 21. Battery upgrade, with large capacity and long battery life. It can be used for about 1 year on a single charge 22. The shell is made of super-tough material, which is scratch-proof, drop-proof and collision-proof, not easy to damage, and can effectively protect the equipment 23. Real-time tracking, one-click search, saving time and effort 24. The whole body is sealed and waterproof design, no fear of harsh environments such as rainy and snowy days