LENOVO Erazer X9 TWS Bluetooth-compatible HiFi Music Earphone Ear Hanging Non-in-ear Headset - White,Black. ENC call noise reduction: Achieve stable and super clear calls. Audio decoding: AAC, SBC. Bluetooth-compatible 5.4: Using an advanced Bluetooth-compatible 5.4 chip, the connection is faster, more stable and has a lower delay.
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