Portable True Wireless Stereo Earbuds Model: YF27B Features 1.4 microphone Feed forward ANC+ ENC, clear voice 2.Low latence 50-300ms 3.SBC，AAC audio transmission protocol supported for HiFi Sound Quality 4.Earbud & charging case transparency design 5.AI dual-microphone call noise reduction algorithm, dual MIC call noise reduction 6.Convenient and sensitive touch operation Specification Bluetooth version: 5.3 Bluetooth Distance: 10M Bluetooth Solution: 7006 Bluetooth Profile: