I bought this just to have in the bathroom medial supply box.  I wasn't expecting much since I've used stethoscopes from local box stores.  I was really surprised how loud and clear this is.  It's definitely medical grade.  It may not be as robust as something more expensive, but at this price point it's just incredibly good.  If it breaks, throw it away and get another?  It's also more comfortable in the ears than cheaper units I've used in the past.