The upgraded F2 ACF is compatible with quest2, which optimizes the comfort and ventilation efficiency of the face interface. Equipped with an active ventilation system, it can better alleviate the fogging of the lens and the stuffy feeling of the face Flexible facial interface: It adopts a new flexible support technology, while ensuring its facial support, the soft face interface can better adapt to different facial contour curves and improve your wearing comfort. Special ventilation structure design of the face interface: We added new air intake grilles at the top and bottom of the face interface, optimizing the air duct design while maintaining the same air flow, reducing the squeezing flow of internal air and avoiding dry eyes Active ventilation fan host: Change the snap connection between the equipped mini fan host and the face interface to a magnetic connection. You can quickly remove it for charging or replacement. Compared with the traditional face interface, the ventilation efficiency is greatly optimized, and the inside of the mask can be cycled every 2 seconds. Alleviate hot air build-up and fogging, with 2-speed wind speed adjustment, a full charge lasts 3-5 hours BOBOVR insists on continuous innovative design and high-quality product manufacturing, we always pay attention to the needs and feedback of every user, and we promise to provide friendly customer service and 18-month worry-free warranty service