Customer Reviews
Very good
The domestically produced respiratory device priced at 58,000 won is the best in terms of cost-performance ratio.
The price is not the main concern; the willingness to practice is more important. ~~~~
The domestically produced respiratory device priced at 58,000 won is the best in terms of cost-performance ratio when compared.
The price is not the main concern; the willingness to practice is more important. ~~~~
A tremendous training tool..
It really works, I was using it to improve my breathing and it lasted about a minute and almost opened up, so it helps you strengthen your lungs. Satisfied, it took about 7 days to arrive in Edo, Mexico.
