Megaphone
* output power: 25W
* working voltage: DC12V
*Battery type: 11.1V4800mAH (built-in lithium battery)
* Impedance of horn: 4Ω
* effective distance: The distance of police sound is 500M, megaphone is 200M
* working time: Police sound≥ 3hours megaphone≥ 6 hours
*charging period: 6~7 hours
* size: 240× 134× 218(mm)