Abstract: This application discloses a headset, where the headset includes an ear housing and an earbud fastened to the ear housing, the earbud includes an earbud body and an SMA component embedded in the earbud body, and the earbud can automatically adjust a shape to adapt to a wearing environment. This application further discloses another headset, where the headset includes a headband and earmuffs connected to the headband, the earmuff includes an ear housing, an earpad fastened to the ear housing, and an SMA component embedded in the earpad, and the earpad can automatically adjust a shape to adapt to a wearing environment. The headset has high wearing comfort. This application further discloses a headset assembly including the foregoing headset and a related method.

Abstract: A distance adjustment apparatus and a control method of the distance adjustment apparatus are provided. The distance adjustment apparatus includes a connection component, and the connection component includes a first component and a second component. The first component is connected to the second component, and a memory alloy component is disposed in a connection region between the first component and the second component. The memory alloy component is controlled by a current to drive the first component and the second component to move closer to and/or away from each other.