BOKANG Flutter Valve Breathing Exercise Device for Lungs, Breathing Trainer, Flutter Valve Device, Mucus Removal, Equipped with 3 Balls and Box, Suit for Lung Rehabilitation Clients and Lung Exerciser

Works great. Has helped my congestion and breathing tremendously.

I’m a Register Respiratory Therapist, I bought this for my mother in law. She suffers from bronchitis and is difficult for to clear her secretion and mobilize them so this is a great exercise for your longs. The functionality is great since it helped her cough up all the secretions. I love how you can change the level of vibration accordingly with weights instead of the standard levels in other acapella

This is erroneously represented in the video and description as a respiratory training device to strengthen inhalation/exhalation ability. It is nearly useless for strengthening exhalation and purely impossible for strengthening inhalation. The mechanics of the device do not allow it. There are several training devices available from Amazon that DO work for this. I personally use an UltraBreathe which is inexplicably more expensive than this device but it DOES work as a trainer. Having said that I want to be clear and say that I would give this device 5 stars as a lung clearing device for removing phlegm. It is superb in this function and when used in conjunction with a Portex Acapella device they provide superior results for lung clearing but to market this as a lung 'trainer' is just wrong, if not intentionally misleading. Hence 3 stars.

The nurse said it was the best he had seen for the price

Pulmonologist suggested it to stop the nasty sensation of “throat frogs “. This is an easy, effective approach that works!

Ordered for my dad & he uses it 3x a day. Works as ordered by Dr.

Good quality.

Difficult to use.

Good product