The AmpliVox SW615A Half-Mile Hailer Wireless Megaphone packs a whopping punch with 60 Watts of power and a Multimedia Amplifier with separate tone and volume controls for line in. This model features a built-in wireless receiver and wireless handheld microphone transmitter.
The auxiliary input jack can be used if you want to incorporate a CD player, tape player or computer sound system. Connect external player devices for a mixed media presentation. The SW615A uses 10 D-cell batteries for an impressive 200 hours of talk time.