With stable quality, portable, artistic, small and exquisite Suitable for company, stage, home, KTV rooms, etc Connect the front of amplifier to input and power control the host Dual Microphone inputs,video input and sound output for video signal,volume can be adjusted individually Reverberation delay function and audio inputs/outputs for lef/right channel Volume frequency regulation Product name:Sound Card Model number:K3000 Battery capacity:1000MHA/3.7V Working Voltage: DC5V/1A Noise ratio(D/A):105db Dynamic range(D/A):105db Total Harmonic Distortion: Less than 0.5% @ 1KHz Item Size: 8.5x6x3cm Item Weight: 0.1kg Suitable for:Internet K song / Voice chat / Stage hosting / Personal recording / Karaoke / Music listening Functions:Built-in rechargeable battery,dual input,volume control,reverb delay function,tone adjustment.Headphone and speaker output. (The product printed words depending on the batch, but this does not affect use) Colour:As Shown Material:ABS Package Contents: 1 * Sound Card Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.