You're talking about newborn hearing screeners, right? There are currently two types. One is the Cornell CN-I-TS hearing screening instrument is the Cornell medical foundation model products, in the market share is very high, but with the clinical use of newborn hearing screening requirements continue to improve, its anti-interference ability is low, the error is large, the referral rate is high, the disadvantage is also gradually found. The other is Cornell's upgraded CN-I-TS Hearing Screening Instrument which is mainly used for hearing test of newborns, children and adults. It is a safe, reliable and easy-to-use hearing screening device. The main difference is the function, depending on what exactly it is used for