SHIDU S28 25W Portable Wireless Voice Amplifier for Teacher Bluetooth Speaker with Microphone Echo AUX TF USB Flash Recording - Black

• Stylish, ergonomic, and comfortable design
• High power double magnetic trumpet, more clear and penetrating
• Bluetooth 4.2 chip, signal transmission more fast and stable
• UHF wireless MIC with built-in high-quality lithium battery
• Adopt 3.5 Inch HiFi double magnetic big-size trumpet, maximum peak up to 25w
• 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 Flash Disk
• One-Touch HiFi Recording
• Support AUX: Can connect with PC and work as a speaker

Specifications:

• Output power: 25W
• Charging voltage: DC 5V 1A
• Lithium battery: 7.4V, 2000mAh
• Working time (50% volume): 8~10 hours (music mode); 10~12 hours (wired microphone)
• Charging time: 3~5 hours
• Product size: 123 x 99 x 48mm
• Unit weight: 298g
• Working temperature: -10?~45?
• Frequency response: 90Hz~18KHz
• Sound coverage: 2500?
• Wireless distance: 30-35m