I am selling this item because I purchased it on Amazon in July of this year but have not had the opportunity to use it. I have used it twice, and only one transmitter was used. Since it was used indoors, the carrying case still has its tag. Thank you for your consideration. DJI Mic Mini (2 TX + 1 RX + Charging Case) The DJI Mic Mini is a compact, high-quality wireless microphone. - Brand: DJI - Model: Mic Mini - Accessories: Windscreen, Charging Case, Cables - Features: Wireless Microphone, Noise Canceling - Color: Gray - Size: Compact Thank you for looking.