Built-in microphone yes \nRange of playback frequencies 20-20000 Hz \nBattery capacity of one earbud 30 mAh \nBattery capacity of the case 350 mAh \nCharging time of the box ~1 hour \nHeadphone charging time ~1 hour \nStandby time up to 200 hours \nOperating time in music/talk mode up to 4 hours \nDimensions 53.8*44.3*21.4mm \nWeight 47g
