Low energy Mini receiver 6.5mm professional interface + 3.5mm adapter is suitable for 99% of audio equipment on the market Multi function control microphone integrates function control keys on the tube body for more convenient operation Strong anti-interference and stable reception. Multiple sets of equipment in UHF true U section are used at the same time without serial frequency The high-efficiency audio processing chip can process the sound in real time and correct the insufficient sound line to achieve the high-quality three-dimensional song you want Dynamic wheat core heart-shaped pickup can effectively reduce noise, make the sound more delicate and the song more beautiful Frequency band: UHF Signal to noise ratio: more than the 70dB Distortion: 0.5% Working channel: 50X2 Frequency response: 50-18kHz Delay: Less than 3ms Receiving distance: about 30 meters Microphone power supply mode: built-in lithium battery Receiving box power supply mode: built-in lithium battery Microphone battery life: about 15 hours Receiving box battery life: about 5 hours Charging time: about 2-3 hours Colour:black Material:Metal Size: x 192 x 60mm Package Contents: 2 * microphone 1 * conversion plug 1 * charging wire 2 * windscreen 2 * anti slip ring Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.