[Powerful Sound] Small-sized voice amplifier with 8W output delivers clear, noise-free sound, suitable for covering a large room accommodating 30-100 people. Amplifies your voice and helps protect your throat. [Easy to Carry] This portable speaker is compact and lightweight. Use the detachable clip to attach it to your pocket or belt, or wear it around your neck or on your waist. [Rechargeable Amplifier] Built-in 4500mAh lithium battery provides up to 20 hours of amplification time and up to 13 hours of music playback. Fully charges in 4-6 hours. [Portable Public Address System] This microphone and speaker set functions as a portable PA system, ideal for use in classrooms, outdoor events, and other venues. [Supports Music Playback] Capable of playing audio from TF (Micro-SD) cards and USB drives. Supports single song repeat, full playlist loop, and track switching. Color: Black Material: Plastic Package Contents: 1 x Voice Speaker 1 x Headset 1 x USB Charger Cable Note: Light reflection and differences in display screens may cause slight variations between the color of the item in the photo and the actual product. Measurement error allowance is +/- 1-3 cm.