Caire Freestyle Comfort 8-cell Battery Power Cord the filters are designed to

the filters are designed to be used solely with Breas's Z1 Travel CPAP machine

This 3 point pressure relief ensures you are given a comfortable breathing experience due to its natural delivery

Z-Breathe Exhalation Relief

1 year warranty

Caire Freestyle Comfort 8-cell Battery Power Cord the filters are designed toAll battery sales are final. There are no returns on batteries. The CAIRE Freestyle Comfort Small 8 Cell Rechargeable Battery provides up 4 hours of battery life at a flow setting of 2 when it is fully charged. The 8 cell battery is a perfect power source when you need extra battery life for flights or other outdoor activities. It averages about 3. 5 hours to charge the lithium ion battery from 0% to 100%. The FreeStyle Comfort recharges the battery