1. Flexi Cool 4-in-1: This suggests that the air conditioner has multiple modes of operation, which could include cooling, heating, dehumidifying, and fan-only modes. 2. Follow Me: This feature usually means that the air conditioner comes with a remote control that includes a "follow me" function. This function allows the unit to adjust its settings based on the temperature at the location of the remote control. 3. PM 2.5 Filter: This indicates that the air conditioner is equipped with a filter capable of capturing fine particles, including those that are 2.5 micrometers or smaller in size. This is often associated with improved indoor air quality. 4. 100% Copper: This suggests that the internal components of the air conditioner, particularly the heat exchanger coils, are made of copper. Copper is known for its good heat transfer properties and durability. 5. Refrigerant Leakage Detector: This is a safety feature that can detect if there is a refrigerant leak in the system. Refrigerant leaks can be harmful and should be addressed promptly. 6. 1 Year Complete, 10 Year Compressor: This indicates the warranty period for different parts of the air conditioner. It typically means that the entire unit is covered for one year, while the compressor (a critical component) is covered for ten years. 7. Intelligent CRF Alert: CRF might refer to a filter replacement alert, indicating when it's time to replace the air filter for optimal performance and air quality.