Ключевые слова: architecture, audio, background, business, cable, cellphone, chroma, communication, concept, device, digital, earphone, equipment, finger, gadget, green, hand, head, headphone, headphones, headset, holding, human, information, isolated, key, lifestyle, male, man, mobile, modern, music, nobody, pad, palmtop, phone, phones, portable, screen, smart, smartphone, sound, stereo, technology, telephone, touch, touchscreen, using, volume, white,