<p><strong>With the ADC Adscope 658 Electronic Stethoscope, you'll hear sounds you may have missed with a traditional acoustic instrument. It's especially helpful when auscultating faint heart and lung sounds, when the patient is obese, or when listening through clothing. The bi-lumen (dual channel) cariology headset optimizes the acoustic pathway, with heavy-walled tubing, large-diameter aural tubes, and a double-leaf tensioning spring that withstands thousands of cycle</strong>s</p> <p><strong>Product Features</strong></p> <ul> <li>Amplifies sounds up to 18X (24dB)</li> <li>Noise-filtering contact microphone eliminates background interference</li> <li>Eight-step volume control with last-setting memory</li> <li>Cardiology headset with bilumen tubing and stainless-steel binaurals</li> <li>Multifunction button controls the frequency mode (bell or diaphragm) and the volume (eight levels)</li> <li>Backlit LCD display powers down automatically if not in use</li> <li>Rechargeable Li-ion battery, twenty hours of continuous use on a full charge</li> <li>High-impact thermoplastic housing withstands drops, bumps, and other contact</li> <li>Measures 30 inches and weighs 175 grams</li> <li>Contact microphone measures 7 mm in diameter, suitable for use on any size patient</li> <li>Includes three pairs of Adsoft Plus snap-on silicone eartips, two small and one large</li> <li>Micro USB cable and scope ID tag also included</li> <li>Two-year warranty on electronics (chestpiece), lifetime warranty on headset</li> <li><strong><em>Free Shipping!</em></strong></li> </ul> <p><strong>Specifications</strong></p> <table class="views-table"> <tbody> <tr class="odd"> <td><strong>Chestpiece Type: </strong></td> <td>Electronic</td> </tr> <tr class="even"> <td><strong>Chestpiece Material: </strong></td> <td>ABS</td> </tr> <tr class="odd"> <td><strong>Chestpiece Finish: </strong></td> <td>Multiple</td> </tr> <tr class="even"> <td><strong>Chestpiece Weight: </strong></td> <td>2.7 oz</td> </tr> <tr class="odd"> <td><strong>Chestpiece Weight(gm): </strong></td> <td>77 gr</td> </tr> <tr class="even"> <td><strong>Diaphragm Diameter: </strong></td> <td>2&quot;</td> </tr> <tr class="odd"> <td><strong>Diaphragm Diameter(cm): </strong></td> <td>5 cm</td> </tr> <tr class="even"> <td><strong>Diaphragm Material: </strong></td> <td>Silicone</td> </tr> <tr class="odd"> <td><strong>Diaphragm Type: </strong></td> <td>Specialized</td> </tr> <tr class="even"> <td><strong>Bell Diameter: </strong></td> <td>N/A</td> </tr> <tr class="odd"> <td><strong>Bell Diameter(cm): </strong></td> <td>N/A</td> </tr> <tr class="even"> <td><strong>Headset Type: </strong></td> <td>Cardiology</td> </tr> <tr class="odd"> <td><strong>Headset Material: </strong></td> <td>Stainless</td> </tr> <tr class="even"> <td><strong>Headset Finish: </strong></td> <td>Satin</td> </tr> <tr class="odd"> <td><strong>Tubing Length: </strong></td> <td>19&quot;</td> </tr> <tr class="even"> <td><strong>Tubing Length(cm): </strong></td> <td>48 cm</td> </tr> <tr class="odd"> <td><strong>Total Length: </strong></td> <td>30&quot;</td> </tr> <tr class="even"> <td><strong>Total Length(cm): </strong></td> <td>76 cm</td> </tr> <tr class="odd"> <td><strong>Total Weight: </strong></td> <td>6 oz</td> </tr> <tr class="even"> <td><strong>Total Weight(gm): </strong></td> <td>175 g</td> </tr> <tr class="odd"> <td><strong>Scope Warranty: </strong></td> <td>Electronics / Headset: 2 Year / Lifetime</td> </tr> </tbody> </table> <p></p> <p></p>