Plug: 3.5 four-level straight plug to 3.5 five-level straight plug with tuning. We'd like to settle any problem in a friendly manner. It's just take you 1 minute. Imported oxygen-free copper wire, which will not interfere with each other when transmitting signals, and enrich the sound quality, Oxygen-free copper and gold-plated connectors for excellent electrical conductivity and durability.
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