Feature 1 Professional reverb adjustment, large knob design, turning on reverb can make the sound fuller and more threedimensional. 2 The sound card supports about 99% of live singing software on the market, compatible with most mobile phones, computers, and tablets, with stable effects. 3 The voice sung during the live broadcast is returned to ears through monitoring, so you can hear your voice effectively. 4 Unlimited Bluetooth connection accompaniment, highquality Bluetooth 5.0 chip, stable signal, fast transmission, 5 Made of high quality of iron material, durable and can be used for a long time.Item Type: Sound CardMaterial: IronChannel System: Dual ChannelSampling Resolution: 16bitInstallation Method: ExternalAudio Interface: 3.5mm/0.13in InterfaceOutput Sample: 44.1KHzBuilt-in Lithium Battery Capacity: 1200mAh (Inclusive)Multi-speaker Mode: 2.0Charging: 5V/1A Package List1 x Sound Card1 x Manual2 x Audio Cable1 x Charging Cable