Feature 1MULTI FUNCTION: Mixer with digital display MP3 (UDISKMP3 input) and Bluetooth function, mobile Bluetooth wireless connection, play music, karaoke. 2SIMPLE OPERATION: Small and simple recording sound card, provides a simple and convenient recording process, allowing you to easily record studio sound quality. 3APPLICATION SCENARIOS: Bluetooth mixer has wide range of use, can be used for live, karaoke, professional recording, guitar playing, home entertainment, etc. 44 CHANNELS: Multifunctional four channel mixer, convenient for you to record playing and singing, computer internal recording, recording and arranging music. 5USB INTERFACE: Mixing board with USB interface, compatible with most U disk, insert the U disk can play songs, can also record songs, just put the sound files into the U disk.Item Type: BT MixerMaterial: Aluminum AlloyNumber of Channels: 4CHMIC (Microphone): 2Channel Equalization: 2Power Consumption: 10WEffect: DELAYVoltage: 100-240V .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x BT Mixer1 x Power Cord1 x Instruction Manual