Product Description DJI O4 Air Unit Pro is an HD digital transmission system built on DJI's O4 technology. It is made for pilots who want low-latency control response, a stable digital link, and onboard HD recording in one compact setup. The dual-antenna design automatically selects a stable frequency and supports transmission range up to 15km. A 1/1.3-inch image sensor records up to 4K/120fps, giving compact FPV builds wide, high-definition footage without adding a separate action camera. Racing mode brings latency down to as low as 15ms and supports up to 8 pilots racing at the same time. The compact module is suitable for indoor builds, mountain routes, and creative FPV setups when paired with a properly tuned frame. Product Highlights O4 HD Transmission: Dual antennas with automatic frequency selection and up to 15km range under FCC standards. 4K/120fps Imaging: 1/1.3-inch CMOS sensor, 155 degree ultra-wide FOV, and 10-bit D-Log M color mode. Low-Latency Racing Mode: Latency as low as 15ms with support for up to 8 pilots racing simultaneously. Canvas Mode OSD: Canvas Mode and Betaflight OSD support for a custom goggles data layout. Compact Module: 32g weight and 33.5 x 33.5 x 13 mm dimensions. Gyro Options: I469D / MP66 versions for different frame and stabilization needs. Specifications Product Name DJI O4 Air Unit Pro HD Digital Transmission System Gyroscope I469D / MP66 Imaging 1/1.3-inch CMOS sensor; 4K/60fps and 4K/120fps video recording; 155 degree ultra-wide FOV; 10-bit D-Log M color mode Video Transmission O4 HD digital transmission; dual-antenna design; 1080p/100fps live view; minimum 15ms latency; up to 15km range under FCC standards; maximum 60Mbps bitrate Storage 4GB built-in storage; microSD card expansion supported Weight 32 g Dimensions 33.5 x 33.5 x 13 mm In the box : DJI O4 Air Unit Pro Camera Module x 1 DJI O4 Air Unit Pro Transmission Module x 1 DJI O4 Air Unit Pro Antenna x 2 DJI O4 Air Unit Pro 3-in-1 Cable x 1