Come with the COZING-OX01 Spare parts: Remote controller, manual, oxygen tube, oxygen generator, ear type oxygen inhaler, and nasal type oxygen inhaler.. I. What`s the feature of the Oxygen Concentrator Generator device / oxygen concentrator portable / mini portable oxygen concentrator for Home and Car Travel ? 1. Completely physical rich oxygen supply. much safer, more environmental and health friendly. 2 . Fully filtrate harmful substances in the air, such as dusts, virus and bacteria , and refresh the air with rich oxygen, environmentally and health friendly. 3. Concise film button , simplified operating procedure, Convenient earphone breathing apparatus 4. Low noise , mute motor, physical oxygen generation 5. Safely broad-spectrum, oxygen concentration satisfying varied demands 6. Portable and light , Most cost effective source of oxygen therapy 7. Ergonomic Design, harmonious airflow, specialized chargeable battery and charger, suitable for traveling and household use 8. CE Certification, ISO9001 Quality Certification II. What`s the functions of our portable oxygen generator design? 1. Efficient oxygen supply 2. Concise film button, simplified operating procedure 3. Portable and light 4. Energy efficient, Economical Consumption 5. Convenient earphone breathing apparatus 6. Low noise, mute motor, physical oxygen generation 7. Safely broad-spectrum, oxygen concentration satisfying varied demands 8. Ergonomic Design, harmonious airflow COZING-OX01 ADVANTAGE as following: 1. The Molecular sieve is original France imported, to ensure the oxygen purity 2. The control panel is humanized 3. Food-grade silicone tube 4. The first grade intake silencer filter system. 5. Anti-vibration pad design 6. Intelligent remote control operation 7 . The compressor adopts the Germany technology, to ensure the oxygen generator with the low noise, low temperature, light weight and high efficiency. 8 . The low noise, the noise is less than 35db. 9. TWO people using one oxygen generator is available if purchase another tube 10. Physical method generates oxygen. 11. Oxygen flow is 1L to 5L can be adjusted