description:
loudhailer type:dynamic
loudhailer dia:25mm
loudhailer amount:1pc
impedance:40HM
frequency :275 Hz-20KHz
output power:3W
power:DC 3.0V(2*AA)
batteries lifetime:>=7 Hours
audio frequency:250mm
plugs pin:3.5mm L
size:140*130*60mm
weight:300g MP3 sound bag