This trolley speaker comes with built-in rechargeable battery, Amplifier, 2 wireless handheld Microphones that can reach up to 100M. It is rechargeable and can last up to 8 hours when using it (recharge for 4 hours). It has Bass, Treble and Echo control knobs. It has USB, SD, and Radio mp3. Good Teaching Equipment. Best choice for Church, Hall and all kinds of events.High quality wireless rechargeable speaker with built-in battery, USB/SD/Radio MP3. For Party, Dance hall, karaoke, etc. Rechargeable battery 4 hours, it last up to 8 hours.
Ultra-low noise distortion amplifying circuit.
Digital karaoke, treble and bass independent adjustment.Built-in MP3 encoding supporting U disk.
Unique acoustic appearance design.
Professional treble and bass gain controlling circuit.
Built-in battery for outdoor activities.
Built-in professional wireless microphone system.
Professional high-effective loud-speaking unit.
Compatible to DVD/VCD/PC and other sound sources. Suitable for adaptor and charging. Intelligent power switch charging circuit.