- Tunable diaphragm allows the user to conveniently alternate between the low- and high-frequency sounds without turning over the chest piece
- Patented tunable diaphragm conveniently alternated between the low and high frequency sounds without the need to turn over the chest piece
- Handcrafted solid stainless steel chest piece for superior acoustics
- Two-in-one tube design eliminates tube rubbing noise
- Excellent acoustic seal and comfortable fit with the soft sealing ear tips
- Overall length 27 inch
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