Voice Amplifier Portable PA System with Headset Microphone SHIDU Amplifiers Loudspeaker Support USB SD for Teachers Coach Yoga Outdoor Activity

【Voice amplifier】: The sound of a voice amplifier with an output power of 15watts is enough to be heard in a classroom of 60 to 100 people. This portable microphone and speaker features high volume and low feedback. It is a great voice amplifier for teachers, tour guides, fitness trainers and anyone who needs to improve their sound. 【SHIDU Voice Amplifiers 】: The portable voice amplifier has a high-capacity 2000 mAh rechargeable lithium-ion battery, which can provide up to 12 hours of working time after a full charge. It only takes 3 to 5 hours to fully charge. 【Portable Voice Amplifier Plug and Play】: Portable microphone and speaker , plug-and-play design allows you to start using the microphone with the speaker immediately without worrying about pairing or connectivity for a worry-free life. 【Lightweight and easy to use】: The personal microphone pa system is compact, stylish and easy to carry. With the strap attached, this lightweight portable microphone can be easily worn around the waist or hung around the neck. 【Using Tips】: 1. Place the microphone in front of your mouth to get the maximum amplification effect. 2. Don't whistle: keep some distance between the microphone and the speaker, and preferably face to face. The best way is to put on a headset, hook the amplifier's speaker to your waist, then turn it on, and then gradually increase the volume as needed.