?Multiple Power Options & Wide Applications?- Hollyland Mars 400S PRO supports 5-12V Type-C wide voltage charging options, including various L-series batteries, different power banks and 6~16V DC powering options; Mars 400S PRO is widely used in indie filmmaking, live broadcasting, sports activities, education recording, wedding ceremonies, and corporate events.[ Note: Product Package doesn't include any battery. ]. ?3 Application Scene Modes & Optional Fan Modes?-The 400S PRO comes with HD Mode, balance mode and speed mode in the settings. The data rate is raised from 8M Bps to 12M Bps for HD monitoring quality; Optional Fan Modes-off, low speed & auto fan modes for different applications and better shooting experience. ?Direct Monitoring Video Feed For Live Streaming?-Another new feature of Mars 400S PRO is the direct live stream data feature. Now, with the 400S PRO, video feed straight out of RX will be used for live streaming on OBS, vMix, or VLC on our personal computer without further encryption and decryption via a video capture device. ?0.08s, 400ft & Multiple Platforms Monitoring?-The new 400S PRO has 400ft line of sight (LOS) wireless video and audio transmission with 0.08S lowest achievable latency; Hollyland Mars 400S PRO transmitter supports 2 receivers. For the number of RX and App, it follows this pattern: 2 RXs - 0 App, 1 RX - 2 Apps, 0 RX - 4 App. ?Transverse Sleek Industrial Design & Low-Power Mode?- Mars 400s PRO with the new design, the system is with a lower gravity center, which means it takes less space on setup. Plus the integrated cold shoe on both the transmitter and the receiver, the system provides a much more stable and convenient installation; Without operation for 5s, the OLED screen automatically enters the low-power mode and reduces the brightness to save battery power.