Features: All-in-One BT Sound Card SpeakerThe bt sound card speaker is a professional device designed for live singing and broadcasting on mobile phones and computers. It features a 20W speaker, DSP chip processing, and independent adjustment of high, mid, and low tones, providing a full-range stereo sound reproduction. Superior Sound QualityWith 12 kinds of electronic sounds, 8 warm-up sound effect and more, this speaker allows you to adjust the treble, bass, and echo independently, creating an excellent karaoke effect and pleasant ear enjoyment for your party, music listening, and singing. Long Battery LifeBuilt-in with a large-capacity lithium battery, this karaoke speaker ensures long-lasting battery life, making it an ideal choice for both indoor and outdoor karaoke sessions. Multiple Connection MethodsThis sound card speaker supports Bluetooth, AUX, OTG, and TF card connections, offering you various ways to enjoy your music. It also features a power display and headphone synchronous monitoring for your convenience. Designed for Live StreamingPerfect for live streaming, podcast recording, voice-overs, and content creation. It is compatible with TV, computer, Android mobile phone, projector and more, easily for mic studio, home studio recording, DJ mixer, music recording, guitar, condenser mic, podcasting, live streaming, etc. Specification: Model: S20 Color: Black, White (Optional) Product Size: 269x147x62.8mm BT version: 5.0 Wireless microphone/BT receiving distance: 10M Battery: polymer lithium battery Battery capacity: 4000mah Charging constant current: 1A Fully charged voltage: 4.1V Boot standby current: 750MA (lights on), 350MA (lights off) Low voltage shutdown current: 3.3V Shutdown standby current: 24UA-25UA Headphone power: 32R, 50mW Speaker/audio power: 4R, 5W Distortion: <1% Maximum power*2: 16W Audio playing time: 4-5 hours Frequency response: 20hz-20khz SNR: 65 Microphone principle: condenser microphone Impedance: 4R Input support: 3.5 audio, Type-C input, TF card, condenser microphone, dynamic coil microphone Power adapter: Type-C Charging voltage/current: DC5V/2A 1KHZ/ODB power amplifier output: 4.55V 1KHZ/ODB amp output: 1.26V Audio algorithm support: decoding: MP2, MP3, WMA, APE.FLAC, AAC, MP4, M4A, WAV (IMA-ADPCM & PCM), AIF, AIFC Encoding: MP2/MP3, IMA-ADPCM Package Size: 29x15x14cm/8.2x5.9x5.5in Package Weight: 882g/31.3oz Packing List: 1 x Podcast Equipment 1 x USB Charging Cable 1 x 0.8m dual-head 3.5mm Audio Cable 1 x User Manual