1Reverb adjustment, microphone volume adjustment, bass adjustment, recording volume control, music volume control, monitoring volume control (headphone function). 2Support mobile phone and computer use, support single earphone use. 3Using high-quality all-aluminum materials, lightweight and thin. 4Built-in lithium battery, continuous life can up to more than 8-12 hours. 5Support dual phone use. 6Highly compatible, except for large diaphragm microphones and USB interface microphones, all 3.5mm condenser microphones and dynamic microphones are compatible with this sound cardCondition: 100% brand newItem type:Sound CardMaterial: metalColor: As picture shownWeight: Approx. 545g Model: V8 Battery type: Rechargeable lithium battery Battery capacity: 1000mAh1 xSound Card1 x Charging cable2 x Recording cable1 x InstructionPlease note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.