Check the listing for details. 3M Littmann 3200 Electronic Stethoscope On-Board Recording, Bluetooth Maroon. Color: Maroon, Condition: New – Open box, Made in United States. Listed at 450.00 USD. The 3M™ Littmann® Electronic Stethoscope Model 3200 combines Ambient Noise Reduction technology and frictional noise dampening features with amplification, Bluetooth® technology, and an all-new user interface, for the next level of performance and ease of use. State-of-the-art technology makes it easier to detect S3 gallops, aortic regurgitation murmurs and abnormal lung sounds. Features include on-board recording, Bluetooth® and sound analysis software. The 3M™ Littmann® Electronic Stethoscope Model 3200 combines Ambient Noise Reduction technology and frictional noise dampening features with amplification, Bluetooth® technology, and an all-new user interface, for the next level of performance and ease of use.