1-7 adjustable continuous flow oxygen supply, up to 90% oxygen concentration Incorporates nebulization function and auto oxygen humidification function Less than 7 months old only used a few times. nebulization kit still sealed. Nasal oxygen cannula sanitized. also can buy new ones on varon uk site. User Manuel can be obtained frim Varon UK online. remote control missing. Simple button operate on machine. If you have not used oxgygen machine before it is advised to consult a health professional.
