Product Name
258 Wired Voice Amplifier
Application
Promotion+Training+Tour Guide+Classroom
Supports
MP3 audio playing TF(Micro SD) card&USB
5W power output
sound coverage up to 400㎡
Battery capacity
3.7V/1800mAh
Charging Voltage
DC 5V, 500mA
Frequency Response
90Hz~18KHz
Product size
106*86*42mm (170g)