SHIDU S278 15W Portable Voice Amplifier Wired Microphone FM Radio AUX Audio Recording Bluetooth Speaker for Teachers Instructor - Black

• High power double magnetic horns, more clear and penetrating
• Bluetooth 4.2 chip, signal transmission more fast and stable
• Wired mic with built-in high quality lithium battery
• OLED screen, adopt 3.5 inch HiFi double magnetic big-size horn, maximum peak up to 15W
• Adopt SHIDU acoustic amplification electroacoustic system
• Equipped with SHIDU special acoustic microphone, HiFi original sound amplification
• Super MP3 audio encoding technology, support TF card & U disk
• One touch HiFi recording
• Support AUX, can connect with PC and work as speaker
• Support FM stereo radio

Specifications:

• Output Power: 15W
• Charging Voltage: DC 5V, 0.5A
• Lithium Battery: 3.7V, 2500Mah
• Working Time: With 50% Volume: 8~10 Hours (Musical Mode); 10~12 Hours (Wired Mic Mode)
• Charging Time: 3~5 Hours
• Product Size: 115*86*35mm
• Unit Weight: 204g
• Working Temperature: -10?~45?
• Frequency Response: 200Hz~18Khz
• Sound Coverage: 800?