The Huawei FreeBuds 4 are powered by the Huawei Kirin A1 chip and come with dual-microphone semi-open active noise cancellation (ANC) that reduces external low-frequency noise combined with excellent ventilation, for a more comfortable listening experience. The FreeBuds 4 use Bluetooth 5.2 that allows them to connect to two devices at the same time. With a quick 15 minute charge the earphones can play up to 2.5 hours of music. The FreeBuds 4 support high-definition vocal recording, 48kHz sampling rate, high-fidelity restoration of full vocals, and AI noise reduction algorithm to suppress ambient noise.

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