I11 Tws Airpods With Charging Case Sensor Touch ( High Quali

1 drive: 15mm impedance: 32 ohms 3 bluetooth version: bluetooth v5.0 + edr power level: level ii output power: 30 mw bluetooth distance: 10 m barrier frequency response: 20hz 20000 9 working voltage range: 3.0 v-4.2 v. microphone sensitivity: -42db 11 with a2dp / avrcp high quality stereo audio transmission and remote control protocol 12 powerful noise cancellation circuit (active noise reduction)