Product features: 0V, 5V, 48V voltage adjustment, compatible with dynamic microphone and condenser microphone, realize wireless singing: dynamic microphone is 0V, condenser microphone or recording microphone is 5V, phantom condenser microphone is 48V. UHF automatic frequency 16 frequency groups, support multiple groups to use at the same time without interfering with each other. If the frequency is interrupted for any reason, you can use the ID code to connect the microphone transmitter and receiver.Gain adjustment function: Equipped with a gain adjustment button, you can adjust the input sound to keep the sound at a stable level signal, making the sound quality more stable. Ultra-long working distance: wireless transmission 60-80M pickup distance, anti-interference and anti-howling, clear sound effect. Long-lasting battery life: built-in 1000mAh high-capacity battery, the use time is up to 6-8 hours. Clear LED display: Real-time display of the frequency band and battery level, allowing you to pay attention to the battery level in time, easy to use. Highlight the on/off status of the machine to prevent forgetting to turn it off.Equipped with XLR to 6.35 Plug for Receiver: Can be used for speakers, mixers, power amplifiers, guitars and other audio equipment. Technical Parameters: Frequency range: 500-980MHz Adjustable channel: 16 adjustable frequency points Channel spacing: 0.5-2.5 MHz Modulation method: DQPSK Frequency Stability: ±3 PPM Frequency response: 40Hz-20KHz Working range: 50-80M Built-in battery: 1000 lithium battery Working voltage: 3.7V Material: ABS+metal colour: black Package Contents: 2 x receiver 2 x transmitter 4 x 6.35 plug 2 x USB cable 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.