Portable teaching voice amplifier,Mini waistband tour guide amplifier speaker,Teaching microphone audio amplifier

Features:

• Loud voice ,sound cover 4,300 square feet (400m²)
• Support TF/Micro SD card,microphone
• Sound cover 4,300 square feet (400 Square Meters)
• Working time up to 18 hours,charging time 4-6 hours
• With a rechargeable 1800mAh Lithium battery, can charge by connecting USB charge cable to  computer or USB power adapter, or by universal charger, etc;
• Portable weight:280g

• Dimension:7.7*7.7*3.6cm
• Accessories:microphone,Charger,Waistband,usb cable,Line-in cable,color Gift box
• Connect with any sound device,can use as external speaker of sound device

• FM stereo radio, can automatically search and save the radio
• With MP3 looping fuction
• With standard3.5mmearphonejack, available forearphonesto listen to music

Specification:
• Output power :5W
• Frequency response:200Hz-13,000Hz±1db
• Current consumption:150mA
• Output impedance:3Ω
• Input signal:Wire MIC(-20dB 600Ω)
• mic Sensitivity:-47dBv/Pa
• Power:DC 3.7V , Lithium 1800mAh
• Working time :12-18H(MIC mode), 4-6H(Music mode);
• Charging time:4-6hours

Shipping:
DHL,FEDEX,UPS,TNT,EMS,BY air,BY Sea