Awei T77 TWS Wireless Earbuds

Awei T77 TWS Wireless EarbudsSpecification :Brand : AweiModel : T77Rotating charging case (mechanical feel with decompression)Bluetooth chip: JL6973D4Bluetooth version: 5.3Supported protocols: A2DP, HFP, AVRCPBattery capacity of earbuds: 30mAh*2 (without protection board but protection IC)Battery capacity of charging case : 250mAh (with protection board)Diameter of horn: 13mmCharging time: 1.5hTalk time: 5hPlay time: 4hStandby duration: 300hHorn sensitivity: 116±3DBHorn impedance: 32ΩStandard input voltage: DC 5VBluetooth working frequency: 2.402GHz~2.480GHzFrequency response range: 20Hz~20,000HzMaximum transmission distance: 10mVoice prompt: supportedMulti-point connection: unsupportedWearing method: In-earUser manual: Chinese and EnglishInterface: Type-CWaterproof rate: IPX5ENC depth of 4 mics: ＞-40dB