Features 1、Support reverberation size adjustment, microphone volume adjustment, high and low bass adjustment, recording volume control, volume control, volume control (headphone function). 2、7 connection methods, one mobile phone Karaoke live broadcast, two mobile phone live broadcast, three mobile phone live broadcast, mobile computer live broadcast, one computer live broadcast, computer accompaniment mobile phone live broadcast, meter input mobile phone live broadcast. 3、With 112 kinds of electroacoustics, 18 kinds of sound effects, and 6 kinds of effect modes, it will bring you a different sound experience. 4、It is the sound card, which can be directly connected to the accompaniment of the Bluetooth playback device of the mobile phone or tablet without connection. 5、It supports mobile phones, computers, and also single earphones, which is very convenience. Specification Item Type: Live Sound Card Material: Metal Color: Black Battery: Li-ion rechargeable battery(Built-in) Package List 1 x Live Sound Card 2 x Audio Cable 1 x Charging Cable