The POWERbreathe® K-Series uses electronic variable threshold resistance training to provide a tapered load that will match the contraction curve of your own breathing muscles throughout your entire breath. This enables you to complete a full breath and muscular contraction...

The POWERbreathe® K-Series uses electronic variable threshold resistance training to provide a tapered load that will match the contraction curve of your own breathing muscles throughout your entire breath. This enables you to complete a full breath and muscular contraction...

This plug adaptor allows you to charge your K-Series device in a traditional electricity outlet in the USA. USB sold separately.