The Saramonic Blink 500 ProX TXR is a compact and lightweight clip-on wireless microphone transmitter with on-board recording and included lavalier that is designed to work with the Blink 500 ProX RX, RXDi, and RXUC portable dual receivers. The Blink 500 ProX TXR is designed to be an upgrade for non-recording Blink 500 ProX transmitters in the B1, B2, B3, B4, B5, and B6 systems. It can also be used as a spare or replacement for a lost or damaged transmitter, and as a second transmitter to expand your single transmitter Blink 500 ProX B1, B3 or B5 wireless system. Since all the receivers can handle up to two transmitters at the same time, you can outfit any Blink 500 ProX RX, RXDi, and RXUC receiver with up to 2x Blink 500 ProX TXRs. ***Designed exclusively for the Blink 500 ProX Receivers and Systems, and will not work with the Blink 500 or Blink 500 Pro receivers or systems*** 24-bit / 48kHz Recording Transmitter that is Incredibly Easy-to-Use The Blink 500 ProX TXR transmitter features 8GB of onboard recording for up to 14 hours and 50 minutes of 24-bit/48kHz lossless .wav backup recording. Allowing you to record back-up audio directly to the transmitter in case of interference or dropouts. The built-in recorder is controlled by a tactile switch, making it easy to turn on and off with no menus fiddle with. Because the switch is inset, you can be sure it won't get turned off accidently when recording. You can also use the transmitter as a standalone recorder for even more flexibility. Extracting the audio files is just as easy, simply connect the transmitter to your computer and drag the audio files to your desktop. There is no specialized app or additional processing needed to extract the audio file. So, when you need the audio, you can access it fast with no fuss.