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- Zinc alloy single-sided chestpiece with dual-frequency diaphragm
- Specially designed membrane lock, within the chestpiece, alters the diaphragm to achieve dual-frequency
- Hold the chestpiece to achieve low frequency response (similar to dual-sided bell chestpiece)
- Apply firm pressure to achieve high-frequency diaphragm response
- Comfortable, non-chill ring
- Lightweight, steel binaurals with internal spring
- 22" latex-free Y-tubing
- Deluxe eartips
- Lifetime Warranty
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