4G LTE Network: Uses a Nano SIM card to connect via mobile data networks instead of Wi-Fi.Solar Power Supply: Connects to a 6W to 10W solar panel (often with a 3-meter extension cord) for continuous trickle-charging.Rechargeable Battery: Equipped with large built-in lithium battery capacities ranging from 8,000mAh to 15,600mAh depending on the exact model variant.