Features: High portable megaphone delivers projection with 30W output power, featuring noise canceling technology that maintains vocal in crowded environments like classrooms and outdoor . Multi functional ABS built amplifier 3 adjustable voice modes (indoor/outdoor/) with integrated USB charging port and card slot, weighing only 1.2lbs for effortless portability in professional settings. Essential voice amplification tool for educators, fitness instructors, guides, and event coordinators requiring sound reinforcement during extended speaking . Optimized for diverse environments including school lectures, studios, conference , and outdoor tourism activities where consistent coverage up to 100 meters matters. Engineered with 15 hour continuous playback battery and quick capability, this PA ensures uninterrupted communication through its shock resistant casing and anti . Specifications: Product name: Multi-functional special for speakers for teachers ABS size:8.9x6.5x3.2cm property:Pink/white/black Package Includes: Megaphonex1 charging cablex1 headsetx1 strapx1 note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.