The ADC Adscope 658 Electronic Stethoscope offers exceptional amplification compared to a traditional acoustic stethoscope. Each one features a contact-activated microphone that filters higher-frequency background noises. Sounds that typically interfere with auscultation, such as thick clothing, are drowned out and replaced with amplified heart and lung sounds. The bi-lumen (dual channel) cardiology headset optimizes the acoustic pathway. This stethoscope is designed with heavy-walled tubing, large-diameter aural tubes and a double-leaf tensioning spring that withstands thousands of cycles.

Features:

• Stethoscope amplifies sounds up to 18X (24dB)
• Noise-filtering contact microphone eliminates background interference
• 8-level volume control holds a last-setting memory
• Design consists of a cardiology headset, bi-lumen tubing and stainless-steel binaurals
• Multifunction button controls the frequency mode (bell or diaphragm) and volume
• Backlit LCD display powers down automatically if not in use
• Rechargeable Li-ion battery holds 20 hours of continuous use
• High-impact thermoplastic housing withstands drops and bumps
• Includes 3 pairs of Adsoft Plus™ snap-on silicone eartips (2 small; 1 large)
• Includes micro USB cable and scope ID tag
• Suitable for use on most patients

Specifications:

• Chestpiece type: Electronic
• Chestpiece material: ABS
• Chestpiece finish: Multiple
• Chestpiece weight: 2.7oz (77g)
• Diaphragm diameter: 2" (5cm)
• Diaphragm material: Silicone
• Diaphragm type: Specialized
• Bell diameter: N/A
• Microphone diameter: 7mm
• Headset type: Cardiology
• Headset material: Stainless
• Headset finish: Satin
• Tubing length: 19" (48cm)
• Total length: 30" (76cm)
• Total weight: 6oz (175g)
• Sensor: Piezoelectric sound transducer activated by polycarbonate diaphragm
• Voltage: 3.7V Lithium-ion polymer
• Power dissipation: 0.115VA (3.7V* 31mA)
• Microphone: 5Hz-5,000Hz
• Filter range (bell mode): 15Hz-200Hz
• Filter range (diaphragm mode): 100Hz-500Hz
• Battery life: 20hrs under continuous power on
• Charging time: 70min
• Amplification range: 6 dB-18 dB
• Digital volume: 8 step, 3 dB/step
• Operating environment temperature: -4°F to 104°F (-20°C ~ 40°C)
• Operating environment humidity: 20% to 95% relative humidity
• Operating environment atmospheric pressure: 101.325 kPa (760mmHg)
• Storage environment temperature: -4°F to 122°F (-20°C ~ 50°C)
• Storage environment humidity: 20% to 95% relative humidity
• Regulatory standards: EN 60601-1: 2005 + CORR. 1:2006 + CORR. 2:2007 + AM1:2012 EN 60601-1-2:2007+AC：2010