Powerful Voice AmplifierStable performance with microphone headset and waistband for clear sound. Amplifies your voice and helps reduce strain when speaking for extended periods. FeaturesCompact speaker design with stable connection, built-in FM receiver, enhanced signal reception, clear audio output, and low noise. Supports TF card and USB drive playback. Bluetooth connectivity for wireless audio streaming. Intelligent feedback suppression to prevent audio howling. Automatically identifies MP3, MP4, WAV, and other common audio formats. Supports track navigation, fast forward, and rewind functions with memory playback feature. RechargeablePersonal voice amplifier with LED screen display. Rechargeable battery provides up to 22 hours of working time with a 3-hour charge cycle. 2200 mAh battery capacity ensures long standby time. ConvenientMini Bluetooth voice amplifier suitable for various environments. Adjustable strap allows for shoulder or waist carry. Includes metal buckle for secure attachment. ApplicationIdeal for teachers, tour guides, instructors, fitness trainers, and event promoters. Designed to support group speaking for audiences of 50 or more. Size: 8.4 cm x 9.2 cm x 2.8 cm / 3.31 in x 3.62 in x 1.10 in Package Includes: 1 Portable Voice Amplifier 1 Microphone Headset 1 Waistband 1 Charging Cable Note: Slight measurement variations may occur due to manual measurement and display differences.