A Novel Approach to Acoustics With luscious treble, booming bass, and everything in between, HUAWEI FreeBuds Pro will transport you to a rich cascade of sound, texture, and detail that far surpasses your hearing range, which is 14 Hz to 48 kHz. 1 HUAWEI FreeBuds Pro, co-engineered with Devialet, replicates the complete emotional appeal of the original recording by bringing out all of the textures and timbres that are hidden in each piece of music, along with a roaring bass and crystal sound quality. HUAWEI FreeBuds Pro offers music lovers and audiophiles the ability to customize their listening to suit their every need in addition to the numerous audio effects that are included with the earbuds.