【PREMIUM QUALITY AND SAFE】 - This mesh tubing and mouthpiece machine is made with superior quality, highly durable materials, featuring a convenient solution cup which is easy to clean and removable.【Adaptability】 - Anyone can use this device, even babies, the elderly and severely debilitated people. The mask material is safe, please rest assured to use【Silent Mode】 - The portable machine for adults and kids uses noise reduction processing technology, the use process is efficient and almost no noise (less than 25dB).【Package Included】 - Machine*1, Adult Mask*1, Child Mask*1, Mouthpiece*1, USB-C Cable*1, User Manual*1. Please do not use both the battery and USB cable. the portable machine can not be charged, machine needs 2 AA batteries or connect the USB cable to the socket to work.