Battery: 1000 mAh lithium ion rechargeable battery Sound card chip: Two noise reduction DSP chips Sound card lithium power: 1000 mAh (full of 12 hours of continuous use) Feature: 1. 12 kinds of electric sound, 8 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.Compact structure and durable metal housing can be used in different locations for your convenience. 6.Made of high quality all-aluminum material with slim and lightweight design. 7.Built-in lithium battery, you can continue to live to reach more than 8-12 hours. 8. Support dual mobile phone use 9.Highly compatiblity, except large diaphragm microphone and usb port microphone,all 3.5mm condenser microphone and dynamic microphone can work with this sound card colour: black Material: metal size: 125 x 105 x 25mm Package Contents: 3 x sound card device 9 x cables 3 x USB cable 3 x instruction manual 3 x color box packaging 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.