Audio headphones; Audio speakers; Communications headsets for use with communication radios, intercom systems, or other communications network transceivers; Earphones and headphones; Headphones; Headphones including attached lanyard; Headsets for cellular or mobile phones; Headsets for mobile telephones; Headsets for telephones; Music headphones; Personal headphones for sound transmitting apparatuses; Personal headphones for use with sound transmitting systems; Stereo headphones; Telephone headsets; Wireless cellular phone headsets; Headsets and headphones, sold separately, for use with telephones, computers, televisions, and electronic audio devices that can detect and monitor physiological characteristics such as heart rate, blood pressure, body temperature, cadence, gait, or other biological data
Electrical and Scientific Apparatus