Noise Reduction Bluetooth Headset with Microphone F990 - Black

F990 Wireless Bluetooth 5.0 Earphones Noise Reduction Earhook Earbud with Microphone for Driving Meeting

Upgraded version of DSP dual microphone call noise reduction, dual microphonesThe main microphone collects human voices, and the secondary microphone collects environmental noise reductionIntelligent multi-function support for calling name (download TTS-APP)Built-in high-capacity lithium battery 90 mAh-continuous talk for 8 hoursThe latest version 5.0 has low power consumption and stable transmissionHumanized design, both left and right ears can be worn, rotating at 180℃Support volume adjustmentIOS system supports power displaySupport voice switching (Chinese and English)Smart one-to-two, connect two mobile phones at the same timeSupport smart mute functionSpecification:Bluetooth model: F990 (dual microphone passive noise reduction)Bluetooth chip: Realtek 8763Bluetooth version: Bluetooth V5.0Transmission distance: 10 metersTransmit audio: Class 2 (-6dbm-4dbm)Charging voltage: DC 5VWorking voltage: 3.7V (3.3-4.2V)Battery capacity: 90mAhCharging time: about 2HListening time: about 8.5HTalk time: about 8HStandby time: about 72HCharging type: Mirco USBSpeaker size: 13 (mm)DC impedance: 16Ω±10%Sensitivity Grade: 111±3dB(at 1KHz 1mW)Frequency Response Range: 20HZ~20KHZRated Power: 3mWMaximum Power: 5mW