Megaphone size: 13.5*10.2*3.8cm
Remote control size: 15.5*5*2cm
Megaphone battery specification: 3.7V 600MAH (built-in lithium battery)
Remote control battery specification: 3.7V 800MAH (built-in lithium battery)
Megaphone charging time: about 50 minutes
Remote control charging time: about 90 minutes
Use time: about 2 hours
Remote control distance: about 1200-2000 meters (the farthest) 
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