As Hollyland’s very first revolutionary 4K transmission system, Mars 4K supports video input/output formats up to 3840x2160@24/25/30fps resolution via HDMI port, and FHD/HD formats like 1080p/720p via HDMI/SDI. Adopting H264 encoding, it can achieve 8-20Mbps bit-rate under HD/Balance/Speed Scene Modes. [SDI&HDMI Interface, Support Decimal-point Rate]. Hollyland Mars 4K comes with HDMI and SDI options for various applications and compatibility. HDMI supports up to 3840*2160P/4K input output. The 3G-SDI port supports broadcast and production standards frame rate output (23.98/29.97/59.94 FPS) for professional equipment like video switchers. When decimal-point rate video input via SDI port, both HDMI and SDI support decimal-point rate output. [450FT Range & 66ms Latency]. Mars 4K can reach an incredible 450ft LOS range and 66ms ultra-low delay in an interference-free laboratory environment. Its metal shell, bullet-style antennas, protective interface design, joystick menu button, full-color LCD screen, and strong Electrostatic Discharge ESD protection bring you durable build quality, modern look, ergonomic design, and superior wireless performance. Retail price $699 Selling mine for $500 Only used for review. In perfect condition!