1.  3x more effective than that of single-layer ear tips.

2.  100% is based on findings from the internal test lab.

3.  Battery playtime is obtained from testing in the soundcore laboratory in continuous audio playback at 50% volume. The actual playtime may vary by volume, audio source, environmental interference, usage, etc. The calculation of the total hours of deep sleep over a period of 10 nights assumes an uninterrupted sleep duration of 8 hours per night, resulting in a cumulative total of 80 hours of sleep.