Mic Sensitivity: -42 +/-3dB. Mic Frequency: 100Hz to 4kHz. Supported Protocols: HSP, HFP, A2DP, AVRCP, TWSD. Headphone Battery: 60mAh (Each Earbud). Earbud Charging Time: 1.5hrs. Playing Time: 3.5hrs (50% Volume). Talking Time: 4-5hrs. Standby Time: 80hrs. Charging Case Battery: 720mAh. Charging Case Time via USB: 2hrs. Charging Case Time via…