The Yuwell SPIRIT-3 is a compact, portable oxygen concentrator designed specifically for active users, providing reliable oxygen supply both on the go and at home. Ultra-light & portable: only 1.8 kg without battery, 2.4 kg with battery. High oxygen concentration: 90% (+6% / −3%) for effective therapy. 4 pulse levels for customizable oxygen delivery. Quiet operation: only about 55 dB – ideal for discreet use. Battery operation: up to 5 hours of runtime (level 1). Charging time: about 3 hours 40 minutes, optional fast charging in 2 hours. Color display with alarm function for safe use. Compact dimensions: 22 × 8 × 22 cm. The Yuwell SPIRIT-3 is the perfect solution for anyone who wants to stay mobile despite oxygen therapy. Thanks to its lightweight design, compact construction, and practical carrying case, the device can be easily taken anywhere – whether traveling, walking, or in daily life. The pulsatile oxygen delivery efficiently adapts to the breathing rhythm, ensuring targeted supply with low energy consumption. Additionally, the device offers maximum flexibility: it can be operated via the built-in battery, AC power, or in the car (DC). The user-friendly color display and integrated safety alarms ensure easy and safe handling. Thus, the SPIRIT-3 is a modern, comfortable, and reliable solution for independent oxygen therapy in everyday life.