Both the Wi-Fi version and the Wi-Fi + 4G version run the same system and AI features. The differences are in network connectivity, power design, and battery life. Key differences between the three versions: Battery life may vary depending on the network mode or the type of batteries used. For the Wi-Fi (XTAR 1620mWh AAA Required) Version: battery life varies depending on actual usage. For the  Wi-Fi (built-in battery) or Wi-Fi+4G version: Calculator mode (no network): up to 16.5 hours on both versions Wi-Fi mode: up to 5 hours of continuous use 4G mode: up to 10 hours of continuous use For full hardware details, please refer to our Tech Specs page.