This is a Professional Digital Mixer Sound Card, a portable audio device that mixes and enhances microphone and music input (mono in, stereo out) for recording, streaming, and
Connects your microphone, phone, or computer
• Lets you control your voice (volume, bass, treble, echo, effects)
• Adds things like sound effects, background music, and noise reduction
• Helps make your audio sound more clear and professional
From the text on the box, this one specifically:
• Has an LCD screen
• Lets you adjust voice tone (high, mid, bass)
• Has sound effects and voice modes (for singing or streaming)
• Includes noise reduction
• Has a 3000mAh battery (so it can work without being plugged in for some time)