Littmann Master Classic II Veterinary Stethoscopes are a series of stethoscopes designed for medium and large animal applications. This model has a 32" inch long tube, ideal for equine and larger dog use. These stethoscopes use the patented single sided chestpiece design that combines both the bell and diaphragm modes into the same side of the chestpiece. Light pressure detects low frequency sounds. Firm pressure produces a diaphragm response detecting high frequency sounds. The single sided chestpiece allows detection of both frequencies without changing position and losing a landmark. Additionally, the design allows for an easier seal to the skin and/or haircoat than the traditional bell. All of the Littmann veterinary stethoscopes feature a patented diaphragm that assures high acoustic sensitivity and consistent frequency responses. They also feature lightweight headsets and soft-sealing ear tips which help ensure comfort and a good seal in the ear. High acoustic sensitivity Chestpiece with non-chill rim Patented diaphragm Single lumen tube Compact and durable design Patented Littmann Soft-Sealing Eartips Three-year manufacturers warranty Use Tunable technology provides convenience, versatility and enhanced acoustics. Its dual-frequency diaphragm combines both bell (low-frequency) and diaphragm (high-frequency) modes in one chestpiece side. You control bell and diaphragm modes by pressure on the chestpiece rather than turning it over. Personalize your stethoscope with your name permanently! Color of personalized text may vary depending on the stethoscope binaural tube color. Personalized stethoscopes cannot be returned. PLEASE DO NOT use quotation marks, parentheses, or function signs (symbols appearing on the number keys of your keyboard, i.e. !@#$%^&*, etc.) when requesting personalization. These characters cannot be processed. If you want quotation marks as part of your personalization, please use single or double apostrophes.