3L portable oxygen concentrator with battary

oxygen concentrator portable oxygen generator, portable oxygen concentrator with battery, noise is low easy to cooperate,timer 1) Operation power pressure: DC 12-17V 2) Operation currency: <2A 3) Outlet oxygen level: 26%-29% 4) Outlet air flux: 4L/min 5) Dimensions: 200 x 165 x 300mm 6) Weight: 2.35kg adpter+body 2.35KG lead acid dischargeable battery 12V+charger+body 3.5KG lithium battery 15V,4A+charger+body 2.5KG arameters: 1) 26%-29% concentration rich oxygen supply 2) Performance: efficient oxygen supply 3) Design: concise top panel for simplified operating procedure 4) Carry: portable and light 5) Energy efficient 6) Nano ear phone: oxygen supplier free from contamination 7) Low noise: mute DC brushless motor and biological oxygen generation 8) Safety broad-spectrum: oxygen concentration satisfying varied demands 9) Ergonomic design: harmonious airflow Features: 1) Styled design, selected material, compact structure, stream-line front panel, elegant profile, fashionable style, earphone shaped oxygen breathing apparatus made of Nano material, sterilizing and contamination free 2) Air purifying and refreshing, photocatalyst active carbon functions to remove dusts, bacteria and odor from air 3) Mild airflow supplied for a harmonious atmosphere 4) Advanced technology incorporated for precise oxygen concentration control to about 26%-29% for rich oxygen achievements 5) Simplified concise control system with intensive control design operational under the control of only 2 buttons