Feature:1. Easy to Use: With simple operation, it is easy for children to learn to use, so it is suitable for small performances, home karaoke, conferences control and teachers' speeches.2. U Disk or MP3 Play: It is compatible with U disk or MP3 player, and it has the function of selecting songs and switching. Besides, music playback device with bluetooth configuration can be connected.3. 16 Reverbs: There is built in DSP digital effector expands the spatial effect of sound with its outstanding realism and naturalness.4. Dual L Band Equalizer: With the dual L band equalizer, the overall pitch output of the song can be adjusted in sections, so that the voice and music can be integrated more harmoniously and smoothly.5. Wireless Chip: There is a builtin wireless chip, the farthest receiving distance is 50M, the best use distance is about 30M, a mixer for two microphones. And it has intelligent automatic frequency search and frequency matching function.Specification:Item Type: Small Stereo MixerMaterial: MetalGross Weight: 1495g/52.7ozMicrophone Battery Type: AA, 2 (not included) (delivered without battery)Maximum Input Level: microphone input +22dBu, line input +20dBu,Maximum Output Level: +22dBu;Main Channel Level Display: 2 LEDs from signal to summit;Input Channel Level: 1LED summit display;Frequency Response Range: 20Hz to 22KHz 1dB;Common Mode Rejection Ratio (MIC 1kHz): >75dB;Total Harmonic Block Loss: <0.05% (channel input to output);Separation (At 1kHz: Channel Mute): >80dB;Noise Figure, (rms 22Hz to 22KHz) : Equivalent signal to noise ratio -122dBu, residual output noise <-88dBu;Mono Stereo Input Channel Equalizer: Treble, Broom, +/-15dB, 12KHz; Bass, Broom, +/-15dB, 80Hz;Maximum Input Power: DC 5C/1A 5watts.Package List:1 x Mixer2 x Microphone (Ships without Battery)1 x USB Charging Cable1 x Manual