This is a generic product designed and engineered by MotivatEM. We are not affiliated with, sponsored by or associated with 3M or Littmann. This is not a 3M or Littmann OEM product and is not covered under any 3M or Littmann manufacturer's warranty. The 3M and Littmann brand names and logos are the registered trademarks of their respective owners. Any use of the brand name or model designation for this product is made solely for purposes of demonstrating compatibility. MotivatEM offers premium quality replacement parts designed for high performance and durability, but may not use identical materials as 3M and Littmann, and therefore cannot guarantee identical results. MotivatEM packaging may vary.