Feature:1. Excellent Metal Material: This digital sound effector is made of excellent quality metal material which is long lasting and durable. It is designed to consistently deliver a superior sound experience.2. Built In Microphone: This digital sound effect processor has a built in microphone for superior sound quality and an incredible sound and video experience, allowing you to mix sounds with ease and accuracy.3. Wireless Bluetooth Playback: This karaoke sound processor uses wireless bluetooth playback, stable transmission, no delay, lossless sound quality, supports most bluetooth devices on the market.4. 99 DSP Preset Effects: This karaoke mixer features 99 DSP preset effects to simulate the environmental sounds of churches, small, medium and large rooms, stadiums, etc. with clear results.5. Easy To Use: This digital mixer is easy to operate with a simple on and off system. It's perfect for beginners and professionals. Its compatibility with a wide range of devices makes it the perfect sound distributor and mixer.Specification:Item Type: 99 DSP Digital Sound Effects ProcessorMaterial: MetalVoltage: AC 100V-240VAdjustment: Microphone Volume, Line Input Volume, Bluetooth Input Volume, Reverb Volume.Package List:1 x Digital Sound Effects Processor1 x Power Plug1 x Power Cable1 x Chinese and English Manual