KZ Waterproof High Fidelity Bluetooth Upgrade Cable for KZ ZST / ZS10 / ES4 / ES3 / ZSR Earphones(Black)

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1. Adopt CVC 4.0 voice call noise reduction technology which provides advanced audio enhancement and environmental noise suppression which solves the interference of environmental noise during the call and provides better voice call quality. 2. Qualcomm CSR8645 Bluetooth chip with 3 seconds of fast connection excellent reconnection speed and stronger signal anti-interference ability. 3. Bluetooth 4.2 with EDR Bluetooth enhanced rate greatly improving the data transmission rate of Bluetooth technology which is three times that of ordinary Bluetooth. Let Bluetooth transfer faster transfer more stable more efficient and lower power consumption. 4. AAC-LC encoding technology compatible with Apple mobile phone lossless transmission mode. The AAC encoding format is better than the MP3 sound quality the file size is smaller and the transmission is faster. 5. With industrial grade ceramic antenna the RF frequency is more stable the audio signal transmission gain reduces the a