Awei T61 Wireless Bluetooth ENC EarbudsFeature:Cost-effective model, dual ENC microphoneChip version: 5.3 (Jieli 6973D4)Battery capacity of earbuds: 35mAh*2Battery capacity of charging case: 300mAhDiameter of horn: 13mmPlay time: 6hTalk time: 5hDepth of noise reduction: ＞35dBSpecification:Bluetooth version: 5.3 (Jieli 6973D4)Supported protocols: a2dp\avctp\avdtp\avrcp\hfp\spp\smp\att\gap\gatt\rfcomm\sdp\l2cap profileBattery capacity of earbuds: 35mAh * 2 (with protective IC but protective plate)Battery capacity of charging case: 300mAh (with protective plate) Diameter of drive units: 13mmCharging time: about 1hTalk time: 5hPlay time: 6hStandby time: 300hSensitivity of horns: 115±3dB at 1KHzImpedance of horns: 32Ω±15% at 1KHz