We have been selling this product for many years and we have been actively accepting feedback from our customers on our stethoscope necklace.
We are constantly improving our products. This is the third time we have adjusted the product.
Eg:according to many customers's suggestion ,our heart is easily fall off ,so we have fixed the heart on the stethscope,it do not fall of and now,
our materials has be more steady .so please do not care the quality.