Features: 1.112 kinds of electro?acoustic, 18 kinds of sound effects, 6 effect modes. 2.Reverb size adjustment, microphone volume adjustment, high and low sound adjustment, recording volume control, volume control, volume control (headphone function). 3.Support mobile phone use, support single earphone use. 4.7 kinds of connection methods: one mobile phone K song live, two mobile phone live broadcast, three mobile phone live broadcast, mobile computer synchronous live broadcast, one computer live broadcast, computer accompaniment mobile phone live broadcast, 5.With Bluetooth wireless connection for phone and tablet to dispaly music. specification:V8 Audio External USB Headset microphone mobile computer PC live sound card. 1. 112 kinds of electro-acoustic, 18 kinds of sound effects, 6 effect modes. 2. Reverb size adjustment, microphone volume adjustment, high and low sound adjustment, recording volume control, volume control, volume control (headphone function). 3. Support mobile phone use, support single earphone use. 4. 7 kinds of connection methods: one mobile phone K song live, two mobile phone live broadcast, three mobile phone live broadcast, mobile computer synchronous live broadcast, one computer live broadcast, computer accompaniment mobile phone live broadcast, instrument input mobile phone live broadcast. 5. With Bluetooth wireless connection for phone and tablet to dispaly music. s: Battery: Lithium-ion rechargeable battery Material: ABS Colour: Black Package List: 1 x Sound Card 2 x Audio Cable 1 x USB Cable 1 x English User Manual Note: Due to manual measurement, please allow 1-3mm error. Due to the difference in display and lighting, the picture may not display the actual color of the item. thank you for understanding.