Assertion: megaphone | /r/HasProperty | powered by rechargeable battery
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Source sentences:
text: This megaphone is powered by a rechargeable battery that takes 5 hours to attain full charge and provides enough power to broadcast up to 800 yards.
text: This megaphone is powered by a rechargeable battery and, it provides enough power to broadcast up to 800 yards thanks to the built-in amplifier.