This wireless microphone allows you to record videos with excellent audio quality simply by plugging it into your smartphone or tablet (USB-C port). It's recommended for those who want to improve the sound quality of their smartphone's built-in microphone for vlogs, YouTube videos, Instagram Live, web conferences, and more. The original box is for a 2-microphone set (BY-M1V4), but the product is a standard configuration of "1 transmitter + 1 receiver" (equivalent to BY-M1V3). This is perfect for those who only need one microphone, such as for interviews or conversations. 【Recommended for】 ・Users of iPhone 15 / 16 series (Type-C) ・Those who want to easily record vlogs with Android smartphones ・Those who want to be free from the hassle of cables ・Those who want to use it immediately without any setup, just by plugging it in 【Product Condition】 ・Operation: Confirmed. No problems with recording and playback when connected to a smartphone. ・Appearance: There are minor scratches from use, but no major damage such as drop marks. Please check the images for details. 【Contents】 ・Transmitter (TX): 1 ・Receiver (RXU / USB-C port): 1 ・Windscreen: 2 (1 spare) ・USB-C charging cable ・Instruction manual ・Original box (labeled BY-M1V4) ※This is one of the two microphones from the original set, so one microphone is not included. However, this does not affect the 1-to-1 communication operation at all. 【Product Features】 ・Direct USB-C connection: Connects directly to the latest iPhones and Android devices without an adapter. ・Ultra-lightweight: Doesn't weigh down your clothes or stand out when attached to your collar. ・Clear sound quality: 2.4GHz digital transmission allows for recording clear audio with less noise.