Powerful Voice AmplifierStable performance, with microphone headset and waistband, clear sound. Amplifies your voice and saves your throat when you have a difficult time speaking loudly enough. FeaturesMini speaker, The connection is stable enough, built in FM receiver, and a wide range of enhanced signal reception, clearer sound, low noise, support TF card and U disk, Bluetooth connection to play, intelligent anti howling, automatically identify mp3, mp4, Wav and other audio, change songs up and down, fast forward and rewind, memory playback. RechargeablePersonal voice amplifier with LED screen display is rechargeable. Working time is up to 22 hours, charging time 3 hours. 2200 mAh battery capacity, long standby time. Convenient The mini Bluetooth voice amplifier is suitable for most occasions, an adjustable belt for hanging by the shoulder or waist, equipped with a metal buckle. ApplicationThis megaphone speaker is very suitable for teachers, tour guides, promoters, fitness and yoga instructors, etc. A big speaking to 50 more members in your group. Size Chart: 8.4cmx9.2cmx2.8cm/3.31inchx3.62inchx1.10inch Package Includes: 1 Portable Voice Amplifier 1 Microphone Headset 1 Waistband 1 Charging Cable Note: Please allow slightly errors due to manual measurement and different monitors.