The Electronic Model 3200 goes even further than the Model 3100 - with on-board bluetooth capabilities. Bluetooth® technology lets you transmit sounds real-time to your PC, which can then be further analyzed, attached to medical records, or reviewed online with colleagues. Free heart & lung sound visualization software, and available software that identifies suspected heart murmurs with a Class I indication. State-of-the-art sound sensor. Proprietary Ambient Noise Reduction (ANR) technology reduces on average 85% of unwanted background noise. Amplification capability when sounds are soft. It all adds up to an exceptional listening experience - compared to acoustic scopes.