Huawei FreeBuds 4-HU
On May 19, 2021, Huawei at a full-scenario smart life conference officially launched the Huawei FreeBuds 4 semi-open noise reduction wireless headset. The earphone weighs 4.1g per ear, which balances comfort and noise reduction needs.
In terms of appearance, FreeBuds 4 continues the classic circular symmetrical design, with three colors of ceramic white, honey red, and frosty silver.
The headset charging box still uses a circular design. The charging box is smaller than Huawei Freebuds3, but the overall battery life remains the same. A single battery life of 4 hours, 15 minutes of charging can bring 2.5 hours of battery life; with the charging box, it can support 22 Hours of battery life, and the charging compartment also supports wireless charging (30 minutes of wired charging can bring 14 hours of battery life).
Huawei said that this headset is equipped with a newly upgraded semi-developed active noise reduction 2.0 technology. ws the fashion trend. In terms of noise reduction, the headset’s original “comfortable noise reduction”, the first semi-open adaptive technology (AEM), the noise reduction depth has been increased from 15dB of FreeBuds 3 to 25dB.
In other respects, the headset uses a feed-forward microphone + feedback microphone design, a semi-closed wind-proof design, an enhanced pickup tube, and noise reduction technology to achieve 48kHz sampling rate vocal recording; and Huawei’s second-generation low-latency technology (90ms ).
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