1. 4 channels (2 mono + 1 stereo). 2. USB power supply (DC 5V): Can be connected to a computer/power adapter/mobile power supply. 3. Sound card: Connects directly to the computer via USB without the need for a driver. 4. Bluetooth connection. 5. Each mono channel has +48V phantom power. 6. Each mono channel is equipped with an effect switch. 7. Recording method: Can record via USB or computer. 8. Effects: Delay + Repeat. 9. Equipped with two wireless microphones with built - in receivers. 10. Color: Black. 11. Material: Metal. Contents of the package: 1. 1 Type B mixer. 2. 2 microphones. Only the above package contents are included, no other products. Note: Light reflection and different monitors may cause the color of the item to vary slightly from the actual product. A measurement error of +/- 1 - 3 cm is allowed.