Application: for temporary o2 supply, good for outdoor activities and high-altitute sports or sightseeing, also suitable for lab experiments and testing applications Power supply: 4 aaa battery or 220 volts Working temperature: 0 degrees -60 degrees Oxygen output: 15-25ml/min, (o2 purity >99.99%) Dimensions: 125mm *96mm *35mm Net weight: 280 gram