Loudspeaker contains Offbeat, whistle, built-in recording and other functions. For schools, factories, police and other multi-purpose, light weight, power, looks beautiful, easy to use. High-power handheld microphone / Handheld microphone / handset loudspeaker (30W)

Output Power: 30W,

external power supply: 9V-13.8V,

battery life: the human voice used in about 7 hours,

standby up to 48 hours,

net weight: 1.3KG,

material diameter (mm): 200

high (mm): 330.