Close-up of a speaker in a commercial train subway. Selective focus.

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Size: 5690px × 3793px
Photo credit: © Andrey Zhuravlev / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: access, amplifier, assistance, background, bell, broadcasting, bus, business, button, call, car, communication, control, danger, design, device, electronic, emergency, equipment, gate, hand, information, instrument, interior, light, macro, metal, microphone, panel, phone, police, protection, public, radio, receiver, safety, security, sos, sound, speaker, support, switch, system, talk, technology, train, transport, transportation, urban, white