A wireless earbud including an outer housing, an internal assembly, and an inner housing. The outer housing and the inner housing may couple together to form a water tight enclosure for the internal assembly. The internal assembly may include components that carry out a function of the wireless earbud, such as printed circuit boards, network interfaces, batteries, loudspeakers, and so forth. The outer housing may also include a proximity sensor for receiving touch and/or antenna(s) for communicatively coupling the wireless earbud to other electronic devices. Additionally, the inner housing may include a charging module for the wireless earbud.