Features: 1. Built-in 2 10W PA speakers provide immersive sound effects, with rich bass, alto and treble, and the sound is dynamic. 2. The speaker serves as a microphone charging station, so they can be easily charged at the same time. 3. With a wireless design and built-in high-efficiency rechargeable battery, which can provide 3-5 hours of power after being fully charged. Use the included micro USB cable to easily charge the machine. 4. This portable speaker supports playing music through Bluetooth connection, USB port, AUX port or TF card. 5. Built-in Bluetooth 5.0, working range up to 33 feet 6. Suitable for home, party, outdoor travel, meeting, backyard party, etc. ideal choice. Specifications: Model: KD203 Speaker Size: 15.5 15.5 14cm Microphone Size: 12 3.2cm Colour: Black Signal-To-Noise Ratio: 80db Output Power: 30W/8W Frequency Response Range: 90Hz-20kHz Distortion: 1% w1k Hz Bluetooth Version:5.0 Bluetooth Connection Effective Distance: 10m Working Voltage: DC 7.4V Charging Voltage: DC 5V Battery Capacity: 3600mAh Play Time: 3-5 hours Package Included: 1x Speaker 2x Microphones 1x USB Charging Cable 2x Microphone Case Kelvenix Karaoke Machine Portable Karaoke Speaker With 2 Wireless Microphones in Black