Bluetooth scheme: (Jieli 6973D4) V5.3Supported protocols: HSP, HFP, A2DP, AVRCPBattery capacity of earbuds: 35 mAh * 2 (without protective plate but protective IC)Battery capacity of charging case: 300 mAh (with protective plate)Horn: φ13 mmCharging time: 1.5 hTalk time: 7 hPlay time: 6 hStandby time: 300 hHorn sensitivity: 93 ± 3 dBHorn impedance: 16 ΩStandard input voltage: DC 5 VBluetooth working frequency: 2.402GHz~2.480GHzFrequency response range: 20Hz~20,000HzMaximum transmission distance: 10 mVoice prompt: supportedMulti-point connection: unsupportedWearing method: In the earUser manual: Chinese and EnglishInterface: Type-CWaterproof rate: IPX6 (only for earbuds)ENC depth (4 mics for voice call): ＞-40 dBAccessories: USB charging cable, user manual
