Wireless earphone

A wireless earphone comprising:

• a housing having a first portion abutting a second portion, wherein the first portion is sized and dimensioned to fit within an ear, the first portion a) having a sound outlet at its far end that is to be inserted into the ear and b) a near end abutting the second portion;
• a speaker driver positioned inside the housing;
• electronic circuitry positioned inside the housing, the electronic circuitry comprising a wireless communications interface to receive audio content over-the-air and, in response, provide an audio signal to the speaker driver;
• a rechargeable power source positioned inside the housing;
• a connecting member extends from, and is permanently coupled to, the housing;
• and
• a sensor positioned within the housing and electrically coupled to the electronic circuitry, the sensor comprising one of a wideband accelerometer, an orientation sensor, a proximity sensor, a touch sensor, or combinations thereof.