Abstract: A housing has a bud portion abutting an elongated stem portion. The bud portion is to fit within an ear. The bud portion has a primary sound outlet at its far end that is to be inserted into an outer ear canal, and abuts the stem portion at its near end. A speaker driver is inside the bud portion. Electronic circuitry inside the housing includes a wireless communications interface to receive audio content over-the-air and in response provides an audio signal to the speaker driver. A rechargeable battery as a power source for the electronic circuitry is located inside a cavity of the stem portion. Other embodiments are also described and claimed.

Abstract: Equipment and methods employed to assist people to achieve lucid dreams (dreams in which one is aware that one is dreaming) function by detecting and monitoring the eye and head movements of sleeping persons for the presence of sufficient eye movement activity in the absence of head movement to indicate the presence of REM sleep and then applying sensory stimuli to sleepers in REM sleep, which if incorporated into their dreams, can cue them that they are dreaming without producing awakening. With this equipment and methods, people are able to have more lucid dreams than they otherwise would. A preferred embodiment includes a face mask that contains two infrared emitter-detector pairs, one for sensing eye movements and one for sensing body movements, a state-test button, and components that produce low intensity sensory stimuli such as light and sound.