1.130nm all-digital signal processing chip
2.4-channel automatic volume control (WDR)
3.Supercardioid directional microphone
4.BLE wireless Bluetooth control technology
5. Medium power, low distortion sound output
6. Adaptive feedback suppression
7. Sub-band noise reduction
8.12 Band Frequency Shaping
9. With memory function
10. Multi-function button
11. Environmental mode selection (P1 quiet environment, P2 noise environment, P3 music)
12.With program switching prompt tone
13.With volume adjustment tone
14. Low battery warning tone
15. Boot delay prompt tone
16. Open ear technology innovation
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