When doctors see patients, they usually use a stethoscope to conduct a preliminary examination of the patient to understand their general physical condition. Now we are in the electronic information age, but it seems that medical devices like the stethoscope haven't improved much and have failed to keep up with the development of electronic information. It's time for some improvements. This Bluetooth stethoscope is a great example of such an improvement. It uses several electronic technologies to cancel out noise, enhance sound, and record sound. The Bluetooth headphone part has an LCD screen that can display heart rate numbers. More advanced is its ability to send data via Bluetooth to a computer, where it can be analyzed using accompanying software. Although it's a small device, it's not cheap, with a price of $379 abroad.