Voice Amplifier，Professional mini Portable lotmusic Microphone Amplifier Speaker Rechargeable Wired Microphone Headset, personal for Teacher Classroom Outdoor Meeting Tour Guides
Brand: lotmusic

Specifications:
Basic function:Voice amplifier,Bluetooth,FM,Music,Power Bank
Full charging time:8-10 with 1A charger,13-15 hours with computer USB charger.
Lithium Battery Capacity:3200mAH
Dimension:86L*39W*117H(mm)
Net Weight: 249g
Output Power:30W

Power Voice Amplifier---Amplifies your voice and saves your throat when you have a need to be heard in every corner. Delivering 10w clear and soft sound to cover about 10000 sq.ft (1000 ㎡).
Multipurpose Modes---This portable voice amplifier features 5 function modes. You can use it as a Voice Amplifier, PC speaker,FM radio,Power Bank and listen to music via TF card.
Multiple Scenes Practical---You can take microphone and speaker set to multiple locations such as classrooms, bingo calling and outdoors,making your voice heard at meetings, when teaching in a large room or holding big outdoor events, such as weddings, tourist guides.
Rechargeable Speaker---Wireless portable voice amplifier built-in a 3200mAH lithium battery and can be used continuously for about 5 hours and it takes only 8-10 hours to fully charge.
Portable & Lightweight---Portable audio system has a portable design,weighing only 0.55lb.It is equipped with a back clip to fix the device at your belt or pocket, or you can hang it around your waist with the help of the waistband belt included.