Riddle: I speak without a mouth and hear without ears. What am…

Riddle

i-have-a-memory-but-no-mind-a-key-but-no-lock-and-i-can

Riddle

i-am-a-window-you-cant-see-through-a-key-with-no-lock

Riddle

though-i-have-no-eyes-i-can-see-all-i-fly-without-wings

Riddle

i-hold-the-power-of-thousands-but-weigh-just-a-few-my

Riddle

i-travel-the-world-yet-never-leave-the-ground-whisper