X-Knight 35 FPV Quadcopter – 3.5 Inch Freestyle Drone with HD Polar Vista

The X-Knight 35 FPV Quadcopter is a compact freestyle drone equipped with 3.5-inch propellers and the Caddx Polar Vista Kit, offering crisp HD visuals and excellent night vision capability. Whether flying under the sun or in low-light environments, it provides a smooth and flexible FPV experience, ready for both freestyle tricks and cinematic flights.

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Key Features

• Caddx Polar Vista HD Camera System
  Includes a lightweight HD FPV setup with a 162° ultra-wide FOV, delivering video quality and signal strength close to the DJI Air Unit. With enhanced night performance, pilots enjoy reliable, high-quality footage at any time of day. The frame also supports mounting a GoPro for cinematic shots.

• Propeller Options for Versatility
  Ships with both HQ 3520 and Gemfan 3520 three-blade propellers. These provide smooth throttle response, stable flight control, and efficient performance. The 3.5-inch size offers enough thrust for freestyle while remaining quieter compared to traditional 5-inch drones.

• Unique Frame for Clean Video
  Designed with a forward camera position and protective housing, ensuring no propellers or frame parts appear in your footage, making it perfect for vloggers and cinematic FPV pilots.

• Reliable Power System
  Built with an F4 AIO 20A flight controller and 1404-3800KV motors, the drone delivers stable power, responsive control, and reduced noise, even during acrobatic maneuvers.

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Specifications

• Model: X-Knight 35 FPV Quadcopter

• Weight: 142.9g (without battery)

• Motor: 1404 3800KV brushless motors

• Connection: XT30 (red/black wires)

• Propellers: HQ 3520 (Gray) & Gemfan 3520 (Gray)

• Flight Controller/ESC: F4 AIO 20A Brushless FC V3

• Battery: Recommended 4S 750mAh 95C LiPo

• Camera & VTX: Caddx Polar Vista Kit, HD 720p 60fps

• Camera Angle: Adjustable 0°–60°

• Frame Size: 155mm

• Receiver Options: ELRS 2.4GHz or TBS Receiver

• Flight Time: ~11–13 min cruising / 4–6 min freestyle

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Camera & VTX – Caddx Polar Vista

The Caddx Polar Vista system is a lightweight HD digital FPV solution weighing just 28g (camera + VTX). It supports 720p/60fps low-latency transmission and excels in low-light conditions. Paired with the X-Knight 35’s well-optimized frame and power setup, it allows both immersive racing and cinematic flights with confidence.

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Frame Design

The custom X-Knight 35 frame is built to provide flexibility in camera tilt from 0° to 60°. The extended camera position ensures a prop-free field of view, producing clear and unobstructed HD footage for both freestyle and cinematic flying.

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Flight Controller & ESC

The upgraded F4 AIO 20A Brushless FC V3 now supports 3 full UARTs and comes with 8M Blackbox flash memory. Designed for DJI Digital VTX compatibility, it combines reduced weight with powerful ESC performance, supporting 20A continuous current. This lightweight yet powerful board ensures smooth plug-and-play installation with minimal soldering required.

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Motors & Propellers

The 1404 3800KV brushless motors (9.66g each) are tuned for 3–4S setups, optimized for HQ and Gemfan 3520 props. Together with the F4 AIO 20A FC, they provide efficient thrust and excellent freestyle performance. The frame is built from T700 carbon fiber, ensuring strength, durability, and crash resistance.

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Battery Performance

Best paired with a 4S 750mAh 95C LiPo, the drone maintains high efficiency and responsiveness. The slim 25mm profile battery allows rapid acceleration, supporting both smooth cruising and aggressive maneuvers. Flight endurance ranges from 11–13 minutes in stable cruising to 4–6 minutes of freestyle flying.

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Package Includes

• 1 × X-Knight 35 FPV Quadcopter

• 4 × HQ 3520 Three-Blade Props (2CW + 2CCW)

• 4 × Gemfan 3520 Three-Blade Props (2CW + 2CCW)

• 1 × Camera Base Mount