The device requires materials that can handle scratches My device is very scratched I like how light the device is The tube at the juncture with the screw in attachment came unglued from the inner parts exposing the electronics The ascultation is good The Ekg part requires more work to get adequate signal I have used eko stephescope for more than a year. I am very supportive of your efforts and drive for use of devices in telemedicine. I also tell my colleagues about your efforts to use AI and data to study The patterns and hopefully get signals of disease progression or worsening. If I can be of assistance to your efforts let me know. I enjoy using this product in my practice of cardiology.