High-Performance Microphone Core for Clearer SoundFeatures a large-diameter microphone core, ensuring precise sound pickup and delivering crystal-clear audio for an enhanced singing experience HiFi Grade Loudspeaker for Superior Sound QualityEquipped with a HiFi-grade speaker, this microphone provides louder, richer, and more dynamic sound, perfect for enjoying music and karaoke at home Support for Wireless DuetsEnables wireless duet mode, allowing two users to sing together for a fun and interactive karaoke session Colorful Dazzling Lighting EffectsIntegrated with vibrant and dynamic lighting effects that elevate the musical atmosphere and make every performance feel like a concert Bluetooth 5.0 for Stable ConnectivityPowered by Bluetooth 5.0 technology, ensuring a stable and seamless wireless connection with your devices for uninterrupted singing and music playback Specifications: Model: K39 Distortion: 2%-5% Pickup: Condenser microphone Speaker specification: 52mm 4 ohm 5 watt Reverberation mode: echo sound effect reverberation Charging: DC5V-1A TF card playback format: MP3 Charging time: 2.5-3H Bluetooth transmission distance: 12 meters (unobstructed) Supported devices: mobile phones, computers (wired independent speakers) Working frequency: 2.402g-2.480ghz Output sensitivity: 400mV Transmitting power: 4dB Bluetooth version: 5.0 Output power: 5W Playing time: 3-4H Signal-to-noise ratio: 90dB Battery capacity: 1200mAh Package included: 1 x Microphone 1 x Charging Cable 1 x English and Chinese User Manual