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The \'RainyDay\' Speaker is Umbrella type foldable speaker.
It is based on an amplification principle.
Horn type speaker which makes the sound big.
The unit can give big sound although it is small.
We do not require therefore the separate power supply.
The Umbrella type film comes to pull tightly so that it can deliver the sound.
Jochiwon, South Korea
Chung-nam Yeon-ki Jochiwon, South Korea