What Bluetooth Version does the AVA Breathe use? AVA Support March 28, 2019 21:59 Updated Follow BT - 5 BLE Related articles Where should I store my AVA Breathe? Is AVA Breathe approved by the FDA? How do I clean my Nose Buds? I dropped my filter in the dirt, is it still okay to use? I lost my Nose Buds, how do I get replacements? Comments 0 comments Please sign in to leave a comment.