Personal wired microphone with headset

Bietrun speaker speaker equipped with microphone, power 20 watts portable and rechargeable and use for 6 hours, Bluetooth and TF Card input, suitable for teachers and trainers in classrooms and halls. Power up to 20 watts covers a range of 50 to 100 people. Equipped with a 2200 mAh battery and usable for up to 6 hours. Equipped with easy-to-use control buttons. Multi-functional and easy-to-use design. Easy to carry with a clothes handle and shoulder strap.