This mask was a good concept that was promised to be worked on and improved, but instead it just kept going without solving the problems. Firstly it fits American faces very poorly, its size fits Chinese faces and probably fits them well or if you are petite. I found it was sold in China a few years before Covid and is said to have improved now but like the promises they would improve the sizes and the app for English speakers on the Indegogo website over a year ago they have did next to nothing and actually lowered the fan speed. Impeding airflow, the only thing I liked about this mask! My Indegogo mask suddenly started making a lot of noise and became unusable, and while it doesn't fit well and the battery is much smaller than advertised, nothing I know of has the same airflow, which is why I ordered it here. The maximum 3-speed fan speed on the current model is now the lowest speed on the previous model, leaving just enough airflow to sit around. The fit is still not perfect and still hits the nose with prolonged use, while the "improved fit" is just partial cracking/flattening of the silicone, which helps little. The battery is still short lived and doesn't last as long as they claim. Generally if you put airflow above everything and have a small face it might be ok but I wouldn't recommend it anymore due to the reduced airflow for people like me who suffer from wearing it for airflow.
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