Features: Uses Ozone (activated oxygen) to disinfect. Kills 99.99% of germs and bacteria. 3 working modes for your choice(view in the image). Small and portable, weighing only 0.9 lbs. Ultra-quiet. Requires no maintenance. Rescare guarantees that this ozone output does not cause any harm to health. Cleaning method: Requires no soap, water, or cleaning solutions, complete dry cleaning. T-adapter used for cleaning mask and machine at the same time. Compatibility: Fit almost all brand 15/22mm CPAP types. For some types, you need to remove the original adapter in your tube before connecting the cleaner. M1 machine package includes: 1 x M1 CPAP Cleaner 1 x Cleaning Bag 3 x Adapter 1 x USB Cable 1 x USB Charging Socket 1 x User Manual Product Dimension: Size: 4.2 x 2.4 x 1.6 inches Weight: 0.9 lb Warranty period: 24 month warranty