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B31 TWS Earphones, True Wireless Earbuds, Basic Function

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P/N B31
Chipset FIYAPOO
Bluetooth Version 5.1
Single Charge Play Time 4 Hours
With Charging Case Play Time 25 Hours
Case Charging Time 1.5 Hours
Driver OD 8mm real copper ring speaker
Wireless Charger ✘
In Ear Detection ✘
Hall Switch ✘
Low Latency ✘
ENC ✘
ANC ✘
Background Noice Score ★★★★★
Bass Score ★★★★★
Vocal Score ★★★★★
High Tone Score ★★★★☆
Tri-frequency Distribution Sco ★★★★★
Sound Field Score ★★★★★
Sound Position Score ★★★★☆
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    说明书 V1.3 - cuv.pdf