Automatically performs chest compressions with precise speed and depth control.Adjustable compression depth; simple operation with automatic positioning and one-button compression; compression modes: 15:2, 30:2, and continuous compressions; 3.5-inch high-definition color touchscreen; dual battery design suitable for extended outdoor rescue operations; battery-powered requiring no gas source, supports online charging during use; optional CO2 module compliant with international guidelines for real-time monitoring of patient end-tidal carbon dioxide; optional compression/ventilation synchronization function.