Head gear , as designed, allows the headband to lose it’s setting permitting leakage. After trying two of the units I have just switched to an Evora nasal mask
Used the battery once and it worked as advertised.
My order arrived promptly. There was an error that was rapidly corrected. I would highly recommend this merchant.
Arrived quickly and accurately.
Very compact and lightweight does take some getting used to.
Works well. Very comfortable nasal pillows. A bit louder than standard but I knew that before purchasing.