GEPRC MARK5 O4 Pro DC FPV Drone

Overview

The GEPRC MARK5 O4 Pro DC FPV Drone is a high-performance 5-inch FPV quadcopter developed around the DJI O4 Air Unit Pro, combining high-quality HD video with responsive flight performance and a durable carbon-fibre frame.

The DC (DeadCat) frame configuration is designed to keep the front propellers out of the camera's view, making it particularly well suited to cinematic FPV flying and aerial content creation. The DJI O4 Air Unit Pro features a 1/1.3-inch image sensor, delivering detailed footage with improved low-light performance, while supporting onboard recording up to 4K at 120fps and live video transmission up to 1080p at 100fps.

A dedicated aluminium camera mount combined with moulded silicone damping helps isolate the O4 Pro camera from frame vibrations and resonance. This results in cleaner, more stable footage during both smooth cinematic flights and more aggressive manoeuvres.

At the heart of the MARK5 is the GEP-F722-BT-HD V3 flight controller paired with a 50A BLHeli_32 4-in-1 ESC and SPEEDX2 2107.5 1960KV motors. The combination provides strong acceleration, smooth throttle response and precise control when powered by a 6S LiPo battery.

Bluetooth connectivity also allows convenient wireless tuning and configuration from a compatible mobile device, while quick-release arms make maintenance and repairs considerably easier.

The MARK5 O4 Pro DC is available in Emerald Green and Coral Orange, with a choice of receiver configurations to suit different FPV radio systems.

Key Features

• DJI O4 Air Unit Pro for high-quality HD digital video transmission.

• 1/1.3-inch image sensor for detailed footage and improved low-light performance.

• Supports onboard recording up to 4K 120fps.

• Live video transmission up to 1080p 100fps.

• DC (DeadCat) frame design helps keep propellers outside the camera's view.

• 230mm wheelbase for the DC configuration.

• Aluminium camera mount specifically designed around the DJI O4 Pro camera.

• Silicone vibration damping helps reduce resonance and unwanted camera vibration.

• TAKER/GEP-F722-BT-HD V3 flight controller with STM32F722 MCU.

• 50A BLHeli_32 96K 4-in-1 ESC.

• SPEEDX2 2107.5 1960KV motors provide strong and responsive performance.

• Gemfan 5136 propellers.

• Bluetooth connectivity for convenient wireless tuning.

• Quick-release arms using a two-screw mounting system for easier maintenance.

• Dedicated compartment for the capacitor and buzzer.

• Optimised frame damping helps reduce vibration transferred to the electronics.

• XT60 power connection.

• Optional GPS support on the DC version.

• Designed for 6S LiPo batteries.

Receiver Options

Choose the receiver configuration that best matches your existing radio system:

PNP

The PNP version is supplied without a pre-installed receiver, allowing the pilot to install their preferred compatible receiver.

ExpressLRS 2.4GHz

The 2.4GHz ELRS version provides a popular combination of low latency, excellent range and fast response, making it suitable for freestyle, cinematic and general FPV flying.

TBS NanoRX

The TBS NanoRX version is designed for pilots using the TBS Crossfire ecosystem and provides a reliable long-range control solution.

Available Colours

• Emerald Green

• Coral Orange

Both colours are available with the receiver options listed above.

Specifications

* Flight time is an approximate reference based on slow-cruising tests. Actual flight time will vary depending on battery, flying style, firmware, weather, payload and other operating conditions.

DJI O4 Air Unit Pro Video System

The MARK5 O4 Pro DC is purpose-built around the DJI O4 Air Unit Pro video system.

The O4 Pro camera's 1/1.3-inch sensor provides high-quality image capture with strong detail and improved performance in lower-light conditions. For pilots producing professional or social-media content, onboard recording supports resolutions up to 4K at 120fps, while the live FPV feed can reach 1080p at 100fps.

The dedicated camera mounting system is designed to complement the O4 Pro, using an aluminium structure and silicone damping to help minimise vibration and resonance.

Flight Performance

The combination of 2107.5 1960KV motors, Gemfan 5136 propellers and a 50A ESC provides the MARK5 with the power required for a wide range of FPV applications.

It is suitable for:

• Freestyle FPV

• Cinematic FPV

• Aerial content creation

• High-speed cruising

• Long-range exploration

• HD FPV recording

• Recreational flying

The 6S power system provides a strong balance between acceleration, efficiency and flight performance.

Maintenance & Design

The MARK5 incorporates several features intended to make ownership and maintenance easier.

The quick-release arms can be removed using two screws, reducing the time required for repairs or component replacement. The frame also incorporates dedicated space for the capacitor and buzzer, helping keep these components securely positioned during flight.

The vibration-reduction system extends beyond the camera mount, with the overall frame design helping reduce unwanted vibration transferred to the flight electronics and camera system.

Package Includes

• 1 × GEPRC MARK5 O4 Pro DC FPV Drone

• 1 × Gemfan 5136 propeller set – 2 CW + 2 CCW

• 1 × 15 × 250mm battery strap

• 2 × 20 × 250mm battery straps

• 2 × Battery anti-slip pads

• 1 × 3D printed accessory pack

• 1 × Spare screw pack

• 1 × L-shaped screwdriver – 1.5mm

• 1 × L-shaped screwdriver – 2mm

• 1 × L-shaped screwdriver – 3mm

• 1 × M8 wrench

Spare Hardware

• 1 × M5 flange nylon knurled nut

• 2 × M2 stainless-steel press-fit nuts

• 1 × M5 × 25 stainless-steel button-head hex screw

• 4 × M3 × 10 button-head hex screws

• 4 × M3 × 8 button-head hex screws

• 2 × M3 × 8 countersunk hex screws

• 2 × M3 × 5 countersunk hex screws

Frequently Asked Questions

Which battery does the MARK5 O4 Pro DC use?

The recommended battery is a 6S LiPo between 1050mAh and 1550mAh. Battery choice will affect flight time, weight and overall performance.

Does the drone include the DJI O4 Air Unit Pro?

Yes. The MARK5 O4 Pro DC is equipped with the DJI O4 Air Unit Pro VTX and camera system.

What receiver options are available?

The drone is available in PNP, ExpressLRS 2.4GHz and TBS NanoRX configurations.

Is the receiver installed?

For the ELRS and TBS NanoRX versions, the selected receiver configuration is supplied with the drone. The PNP version allows you to install your preferred receiver.

What is the advantage of the DC frame?

The DeadCat configuration positions the front arms and propellers to help keep them outside the camera's field of view. This is particularly useful when recording cinematic footage.

Does it have GPS?

The DC version supports the optional GEP-M10 GPS module.

What is the approximate flight time?

GEPRC specifies approximately 6–8 minutes under slow-cruising test conditions. Actual flight time depends on battery capacity, flying style, environmental conditions and payload.

Is the drone suitable for beginners?

The MARK5 O4 Pro is a powerful 5-inch FPV platform intended primarily for pilots who already have experience with FPV drones. New FPV pilots should become familiar with the aircraft and its flight characteristics in a suitable open area before attempting more demanding flying.

What colours are available?

The MARK5 O4 Pro DC is available in Emerald Green and Coral Orange.