Play out MP3 music or your own message via:

• SD card
• USB flash drive

• Built in support for USB / SD card slot.  Control directly with the buttons on the voice amplifier
• Powered by litihum battery (supplied with system).  No need to change battery.  Environmental
• Battery life: 8 to 12 hours
• Coverage area: 1.5 classrooms or 1/2 basketball court

• Mini speaker
• Lithium battery
• Headset
• Waistband belt
• Battery charger (we supply US or UK or Austrlia, according to your shipping address

Frequency Response: 50Hz-10kHz
Max. Output Power: 8W
Output Impedance: 4Ω
Operating Temperature: -10℃-45℃
Operating Voltage: 7.4V
Battery Type: Built in lithium battery
Battery recharging Period: Approx. 10hrs
Durable Period: 6-8hrs at full state
Dimension: 100mm x 40mm x 81mm