•Adopts molecular sieve oxygen generation technology. The nasal oxygen output flow can be adjusted from 1-8L/min with oxygen concentration up to 90% to meet various oxygen inhalation demands. •It maintains stable output pressure between 30kPa and 60kPa for steady and comfortable oxygen supply. •Equipped with clear operation display panel for intuitive and easy operation. •Fitted with mobile casters at the bottom for convenient movement and placement. •Compatible with AC220V±10% 50Hz power supply, and works stably under ambient temperature of 10℃-40℃ and relative humidity of 15%-80%.