Feature: 1. 112 kinds of electric sound, 18 kinds of sound effects, 6 kinds of effect modes. 2. Reverberation size adjustment, microphone volume adjustment, high bass adjustment, recording volume control, music volume control, monitoring volume control (earphone function). 3. Support mobile phone computer use, support the use of single headset. 4. 7 kinds of connecting methods: one cell phone K song live, double cell phone live, three mobile phone live, mobile phone computer synchronous live, one computer live, computer accompaniment cell phone live, instrument input cell phone live. 5. Bluetooth function. Specification: Battery: lithium ion rechargeable battery Material: Metal Color: Black Product size: 125x105x25mm/4.92x4.13x0.98'' Weight: 467g