- VOVIGGOL S17 portable voice amplifier, designed for teachers, tour guides, and presentations - Powerful 8W speaker with clear, distortion-free sound, ideal for groups of 25 to 100 people - 2200mAh rechargeable lithium battery, up to 20 hours of continuous amplification and 13 hours of music playback - Lightweight, adjustable, and comfortable headset microphone, with waist band and rear clip for greater versatility - Plays MP3 files from TF card (Micro SD) or USB drive, with repeat and track change functions - 3.5 mm jack input for use as a wired speaker - Compact and lightweight design (9.2x8.4x2.8 cm, 180g), easy to carry and store - Perfect for classrooms, meetings, yoga, shopping malls, speeches, and outdoor activities - Attractive and modern pink color, designed for professional and educational use - Improves voice projection, reduces vocal strain, and facilitates communication in large spaces