112 kinds of electric sound, 18 kinds of sound effects, 6 kinds of effect modes. Reverberation size adjustment, microphone volume adjustment, high bass adjustment, recording volume control, music volume control, monitoring volume control (earphone function). Support mobile phone computer use, support the use of single headset. 7 kinds of connecting methods: one cell phone K song live, double cell phone live, phone live, mobile phone computer synchronous live, one computer live, computer accompaniment cell phone live, inst ent input cell phone live. Bluetooth-compatible function. Battery:lithium ion rechargeable battery Due to different product batches, the appearance , which does not affect the use. Colour:Black Material:Plastic Package Contents: 1 x Sound Card 2 x Audio Cables 1 x USB Cable 1 x English User Manual 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.