This Item was used twice is 100% good. Includes manual and two sets of ear.

Thanks to a proprietary technological advancement known as Ambient Noise Reduction (ANR), the Littmann Electronic Stethoscope Model 3000 reduces distracting room noise by an average of 75% (-12dB) without eliminating critical body sounds. Combine that with amplification up to 18 times greater than the best acoustic (non-electronic) stethoscope and you have an instrument that is uniquely equipped to help you pick up difficult-to-hear heart, lung, and other body sounds. Acoustics: Amplification up to 18 times greater than the best non-electronic stethoscopes Ambient Noise Reduction Technology (ANR) Programmable volume settings Ergonomic, one-button control allows you to adjust volume and frequency mode with one finger Chestpiece & Diaphragm: Ergonomically designed for easy, one-hand manipulation Nonchill diaphragm for patient comfort Accommodates infant, pediatric, and adult patients Eartubes & Tubing: Eartubes are capped with patented 3M Littmann Snap Tight Soft-Sealing Eartips for excellent acoustic seal and comfortable fit Traditional cardiology tube set allows scope to easily fold and be placed in pocket