20W Wireless Voice Amplifier for Teachers with Wireless Microphone Headset, Bietrun Portable Rechargeable(Work of 6 hrs)Loud Bluetooth PA Speaker with Wired Mic Headset for Teaching, Coach, Instructor

Warm Tips: Do not put the microphone in front of the voice amplifier when using it, otherwise it may cause noise or statics.
UHF 20W Voice Amplifier: The Bietrun voice amplifier adopts UHF transmission, with 20W peak power to output powerful, clear, crisp and no noise & distortion sound. It covers about 10000 sq. ft (1000 ), and the stable performance perfect for amplifying your sound and saving your throat.
Rechargeable and Long Battery life: Personal voice amplifier built-in a 2000mAh rechargeable lithium battery, works 12 hours at max volume and takes only 3H with a full charge. The wireless microphone can be used for about 6 hours. 2 in 1 charging cable (Included) charges amplifier and wireless mic simultaneously. If no input signal is detected within 20 seconds, speaker will enter sleep mode automatically to save power.
Portbale,
Lightweight and Compact: The speaker is a portable public address system. Weights only 0.45 lb/204g, equipped with a back clip to fix the device at your belt or pocket, or you can hang it around your waist with the included waistband belt. You can use this in any setting from indoor to outdoor use, perfect for teachers, coaches, training, presentation, tour guide, classrooms etc. A big help in speaking to 50+ members in your group.
Bluetoothe & Multi-function: Touch the SOURCE button 3 times to switch to bluetooth 5.0 (30M) mode, then turns on Bluetooth on the phone, search "Bietrun and pair it. Support TF (Micro SD) card, USB Disk, FM radio, Recording (Only in wired mic mode), 3.5 mm AUX audio input and touch display. You can long press Play/Pause button to repeat single tune or loop all music. Please make sure the TF card/USB Disk (Not included) is inserted before recording.