【Auto Pairing】Press and hold the power button for 2 seconds, and it will automatically pair within 10 seconds, requiring no other operations. 【Long-lasting Use】The transmitter has a built-in 90mAh lithium battery, allowing for 10 hours of continuous operation, perfect for long interviews and live broadcasts! 【50-meter Stable Transmission】Utilizes 2.4GHz wireless transmission technology, providing stability and resistance to external noise. 【Noise Canceling Function】Press the "NR" button to turn off noise canceling, eliminating ambient noise and white noise, allowing for pure audio recording. 【Lightweight & Compact】The transmitter weighs only 16.5g, and the receiver weighs 10g. About the size of a table tennis ball and a highlighter, making it convenient to carry and won't snag on clothing when worn. 【Type-C Device Compatible】Compatible with smartphones, tablets, and laptops equipped with a Type-C port. 【Dual Channel】The recording mode can be freely set to mono/stereo, making video production and editing convenient. ※ Unopened, therefore inspection has not been performed.