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1. Phone Call Clarity Enhancement Based on 4 Mics Noise Reduction：Each earbud had a main and a vice mics,4 mics with environmental noise reduction technology work together to monitor the sounds around you and instantly produce an opposite signal to reduce background noise,help isolate speaking and suppress the unwanted disruptive sound,make sure you can hear the caller and the caller can hear what you say.Design for business and commute.
2. Multifunction Charging Case：Each earbud can get 8 hours play back from a single charge. 2200mAh charging case supports 8 times of recharging for both earbuds, gives up to 64 hours continuous music time. And the case is compatible with wireless charger which offers you another convenient charging method and it also can provide emergency charging for mobile. LED power display on the case can help check the charging status of earbuds and charging case.