earbud

An earbud is a small type of headphone designed to be worn in the vicinity of the ear. Most earbuds sit in the outer ear or at the entrance to the ear canal rather than enclosing the ear. This distinguishes them from larger over-ear headphones and from fully in-ear monitors that seal the canal.

Design and variants: Earbuds are commonly wired to a source device via a 3.5 mm jack or USB-C/Lightning; wireless models use Bluetooth. They may be true wireless with separate buds or semi-wireless with a connected cable. The tips vary: some are open and do not seal the canal; others use silicone or foam tips that insert into the ear for improved fit and isolation.

Audio and features: Drivers are typically small dynamic drivers; higher-end models may use balanced-armature or multiple drivers. Sound quality varies with fit and design. Many earbuds include inline microphones and controls, and wireless models use charging cases. Some offer water resistance, passive sound isolation, or active noise cancellation.

Usage and safety: Earbuds are portable and commonly used for commuting, workouts, and casual listening. Proper fit affects comfort and bass response. Users are advised to listen at moderate volumes and take breaks to avoid hearing fatigue. Maintenance includes cleaning tips and replacing worn tips or cables.

History: Earbuds became common with portable audio devices in the late 20th century as a compact alternative to bulkier headphones. The term is informal and may be used broadly for small headphones that sit in or at the ear.