UNIVERSAL WIRELESS SYSTEM: Record crystal-clear audio from your DSLR, camcorder, smartphone, or tablet. Perfect for filmmakers, vloggers, mobile journalists, and content creators, RELIABLE AUDIO: Features an upgraded RF Chipset that broadcasts on the open 2.4GHz frequency spectrum and wireless transmission up to 200' ft (60m), 1-YEAR WARRANTY: We’ve got your back. Our products are designed to ease your technical woes, not add to them. Our friendly US-Based support is here to help, CONVENIENT: Listen to your audio in realtime with the headphone input to ensure accurate sound recording. For more control, adjust the microphone volume to reduce time in post-production. Each unit is powered by two "AAA" batteries for up to 6 hours of operation, IN THE BOX: Includes 2 transmitters with belt clips, receiver with belt clip and shoe mount, 2 lavalier microphones, 3.5mm TRS cable for cameras, 3.5mm TRRS cable for smartphones and tablets, and a hard case