Name: portable oxygen generator Oxygen Concentration: 30%±2% Airflow outlet: Approx 4+/-0.5L/min Oxygen Supply: Directly supply Rated Voltage: AC100V-240V /DC12V-16.8V Power Consumption: 30W Product Size: 165mm(L)*120mm(W)*75mm(H) Noise: ≤45dB Weight:900g Power Consumption:average below 30W Certification:CE Installation:Portable Oxygen flow: 4L / min Oxygen concentration: 30±2 % Control method: manual control Output voltage: D C 1 6 .8 V Input Voltage: AC100-240V Rated power: ≤30 V A Item weight: 0.9kg Noise:≤5 0 dB Optional battery: 6000 mAh Features: [Normal working environment conditions] Working environment temperature: -5℃~45℃ [Transport and storage environmental conditions] Ambient temperature range:-40℃~+50℃ Relative humidity range:10℃~85℃ (no condensation) Store in a non-corrosive gas and well ventilated room, avoid violent vibration during transportation. Newest Battery Portable Oxygen Concentrator 4L/min for travel/car/home use with TP-B2 The net weight of this machine is 800g, the net weight of the battery is 500g, which is very convenient and convenient, which also reduces the logistics cost; the oxygen flow rate is 4L/min, and the oxygen concentration is about 32%. This machine has been brought to Tibet for testing, at an altitude of 3600 meters.the oxygen flow rate reach 2.8L / min, and the oxygen concentration of about 30%, can meet a normal oxygen demand; The battery of our lithium battery is Samsung brand battery. The power can be used for more than 3 hours. In addition to the professional test, we also have tests in the office. In the case of battery used, The result of the test was 3 hours and 5 minutes; The machine is more mini, the compressor will be smaller, which also requires the compressor to be more precise, the compressor is customized; the power adapter can be connected to the machine for power supply, or as a battery charger, eliminating the need for a battery charger. The cumbersome and convenient parts are more convenient;