Features:
Better balance damping system (3rd Generation)
Sandwich style metal composite technology for diaphragm
"Spiral Pipe" sound chamber, bass performance optimization
Fashion flat line...
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Features:
Better balance damping system (3rd Generation)
Sandwich style metal composite technology for diaphragm
"Spiral Pipe" sound chamber, bass performance optimization
Fashion flat line design, built-in kevlar fiber, more resistant to pull
A large number of medical ear canals data,...
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