Features: High-endnd aluminum appearance using Wireless 5.3 and DSP double chip decoding, wide compatibility and stability Wireless receiving, Wireless transmitting , microphone singing 3-in-1 function Receiving upgrades 1 to 2, for two cellphones at the same time to songs playback. LED digital display large screen display, clearly visible;Equipped with cool breathing light, multiple color flashing light. 1200mA Digital signal to analog chip, support digital optical fiber,multiple interfaces. Specifications: Support 5~8meters remote control External 6.5mm microphone interfaces, support singing. Charging time: about 1.5 hours Charging method: USB C 5V/1200mA Support USB playback Size:about 119X111X42mm/4.69x4.37x1.65in Package Includes: 1PC 5.3 Auditory Receiver note: Due to the problem of lighting effect, there might be tolerances in product, please understand. Please allow 0-1cm error due to different measurement