This device features a small fan that activates when turned on, encouraging natural nasal breathing. I purchased several units through crowdfunding for my family, but as I no longer need them, I am selling one unused unit. Retail price: 9,800 yen The USB-rechargeable "UPAP (up Positive Airway Pressure)" is an item that suppresses mouth breathing and supports nasal breathing. It helps to improve the breathing environment during sleep. ■ Set Contents ・Main unit ×1 ・USB charging cable (USB Type-A ⇔ microUSB Type-B) ×1 ■ Specifications ・Compatible voltage: 100-120V ・Battery capacity: 100mAh ・Charging time: Approximately 2 hours (can be charged with 5V/1A) ・Continuous usage time: Approximately 3 hours This product is designed for safety and does not move continuously for long periods during sleep. It supports the onset of sleep and the transition to deep sleep, allowing for efficient use without waste. Even after the fan stops, the expansion effect of the nasal cavity by the silicone nose pad continues. It supports the rhythm of breathing and maintains a natural sleep environment. ■ Product Information ・Model name: UPAP ・Charging method: USB charging ・Main uses: Suppression of mouth breathing, promotion of nasal breathing ・Features: Silicone nose pad, on/off switch, USB port equipped