Data comes from Huawei lab tests. Splash, water, and dust resistance are not permanent conditions and resistance may decrease over time with normal use. Charging duration Charging the earbuds with the charging case 20 minutes Charging the empty charging case with a cable 40 minutes Charging the empty charging case wirelessly 240 minutes Battery life Music playback with the earbuds only (noise cancellation off) 5 hours Music playback with the earbuds only (noise cancellation on) 3.5 hours Music playback with multiple charges in the case (noise cancellation off) 30 hours Music playback with multiple charges in the case (noise cancellation on) 20 hours Note Battery life and charging data comes from Huawei lab tests.