1. Wide working range: The device operates effectively within a range of up to 33 feet, making connections easy with AUX, TF/USB inputs. You can record audio transmission through a microphone connected to a USB/TF card. The USB port also serves to charge your phone or tablet. 2. Easy to match: This karaoke machine comes with 2 wireless microphones featuring an engaging voice-changing function and can be charged conveniently. The speaker and microphones automatically pair upon power on. 3. Powerful speakers: Experience excellent stereo sound quality with the powerful speakers that provide an immersive listening experience. The built-in DSP chip ensures the speaker adapts to various scenarios without distortion. 4. Different sound field effects: The karaoke speakers can adjust sound field effects, offering options such as standard, pop, rock, classical, treble, and bass. Enjoy sharing a microphone with family and friends. 5. Built-in large battery: The powerful rechargeable lithium battery for both the speaker and microphones can deliver up to 3.5 hours of uninterrupted music playback at maximum volume. Features: Name: Wireless Karaoke Machine Speaker. Wireless connectivity: 5.0. Supply voltage: 5 V. Frequency range: 20 Hz - 20 KHz. Transmission distance: 10m. Battery capacity: Built-in 3000mAh lithium battery. Microphone battery capacity: 1500mAh. Charging time: about 1.5 hours. Play time: about 5 hours. Color: red/black/silver. Product size: L5.5*W6.1*H6.2 (L138*W155*H158mm) Package: 1 wireless microphone speaker. 2 microphones. 1 x USB cable 1 x instruction manual Notice: Due to lighting effects and shooting angles, there may be some slight differences in the item's color and the color shown in the picture. There may be errors in product dimensions due to manual measurement.