American manufacturing and quality: Produced by AirSep, a leader in the medical field. High flow capacity: Provides you with a pure and continuous oxygen flow of up to 5 liters per minute (easily adjustable via the front knob). Practical and lightweight design: Equipped with durable bottom wheels for easy transport between rooms and a comfortable top handle. Hour meter display: Equipped with a built-in digital screen to accurately count operating hours (to ensure transparency and maintenance tracking). Safe and economical: Operates directly on regular home electricity without the need to refill cylinders. Device condition - used Price 500