Ampilfer: 1)All ABS body 2)Big Power 3)Talk/Recorded Function DescriptionYC-810SIZE, φ135×130MM Function,Talk/Record (10”)Power,12V DC 25WABS HousingSound coverage:,100MExtra Parts:,a microphone& a power amplifierYC-820SIZE, φ135×130MM Function,Talk/Record (20”)Power, 12V DC 25WABS HousingSound coverage:,100MExtra Parts,a microphone& a power amplifier megaphone