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A new benchmark for waterproof drones

SplashDrone 4 is the 5th generation waterproof drone representing SwellPro’s 7 years of knowledge and understanding of drone waterproofing technology.

SplashDrone 4 is the all-new waterproof flight & float platform designed for multipurpose operation in any harsh environment.

SplashDrone 4 Main Features:

  • 2kg payload capacity
  • Dynamic return to pilot
  • 30 minute flight time
  • Automatic power flip
  • 5km image transmission

Does not include Payload Release or camera.

Choose from 1 or more of the following:

PL1-S Waterproof Payload Release

GC1-S Waterproof 1-axis 4K camera

GC2-S Waterproof 2 axis night vision camera

GC3-S Waterproof 3-axis 4K camera

All-new IP67 seawater-proof body

SwellPro SplashDrone 4 is designed to have the best waterproofing technology in the industry. The tough, rigid fuselage of is made out of industrial-grade ABS. Each SplashDrone 4 is factory-sealed to the slightest details and air-pressure tested for our exclusive 100% waterproof guarantee. The waterproof motors and internal electronics are also coated with corrosion-resistant coating adding an extra layer of protection over the already total waterproof design.

All-new IP66 Waterproof Remote Controller

The all-new SplashDrone 4 remote controller is now waterproof for your worry-free operation. You can even toss it on the water or rinse off the collected sand. The built-in GPS offers a variety of new features, including real-time tracking and dynamic return to pilot. The remote controller is now capable of offering multiple devices connection for a better collaborative operation.

Payloads up to 2kg

The SD4 can comfortably lift a payload of 1.5kg with a maximum payload weight of 2kg.

Multi-functional Payload Options

With its modular multi-functional payload system and open interface design, the SplashDrone 4 can quickly adapt to different tasks in the field.

For Filming:

GC3-S Waterproof 3-axis 4K camera

Capture smooth videos and crisp photos with the new, fully waterproof 4K camera stabilized by a 3-axis gimbal.GC3-S is our flagship gimbal camera. The powerful gimbal remains stable even in water while taking underwater shot. GC3-S now has Pro mode and supports RAW photo. ND filters can also be added for greater creative freedom.

GC2-S Waterproof 2 axis night vision camera

The new night vision camera comes with a spotlight that can illuminate night time scenes and restore true colours. Even without the LED, the camera itself can still capture decent details in low-light situations.

GC1-S Waterproof 1-axis 4K camera

With the same sensor as GC3-S, GC1-S can capture high quality 4K videos and crisp photos. It also has Pro mode and supports RAW photo. ND filters can be added for greater creative freedom.

For Fishing:

PL1-S Waterproof Payload Release

The PL-1 payload release turns the SplashDrone 4 into an aerial bait dropping system that can deliver 2KG of bait and drop the bait at targeted locations up to 4km. The PL-1 can be mounted together with your choice of camera accessories for targeted payload release. Using the SwellPro NaviFLy app, you can program the bait drop or replay flights to successful fishing locations.

Innovative Smooth+ Flight Control

The patented “Smooth+” flight control allows the pilot to finely tune the Roll and Yaw of SplashDrone 4.Smooth+ makes professional, steady flight control as easy as turning the knobs. Want to take a steady shot? Simply switch to Smooth+ control, together with our 4K 3-axis gimbal, you can take high-quality, ultra-smooth & steady shots effortlessly.

5km Image Transmission

The latest 5.8GHz digital image transmitter and adjustable antennas ensures a clear and reliable image and control signal range to the SplashDrone 4 of over 5km while airborne.

Important: Due to the nature of radio waves, when flying just 0.5m above the water, range is still up to 2.8km and floating on the water surface the transmission range is 500m

High-visibility, innovative waterproof body design

The design of the SD4's fuselage brings together SwellPro engineers' deep experience and understanding of waterproof drones, materials and processes. Its structure is simple in design, attractive in appearance, lightweight, strong and most importantly functional. The body has been designed to facilitate upgrading, repairing or replacement of parts as well as supporting various custom modifications thanks to integrated mounting points. A hinged, waterproof hatch makes changing the slide-in battery module fast and easy.

Powerful propulsion system with tuned flight computer

Following 18 months of intensive R&D, the SwellPro SD4 marries new motors, digital reflux speed controllers (ESC), an all-new custom flight computer and gyroscope to deliver a fully featured multi-purpose flight platform. Able to fly in challenging weather conditions with variable loads, the new SwellPro SD4 provides a reliable and flexible solution to the challenges of operating safely over water for long distances.

Waterproof motors

The newly designed 3510 motors have strong and stable performance with high load-carrying capacity and excellent flight performance. The motors have been specifically designed for the marine environment with premium materials, excellent waterproof coatings and salt-water rated bearings to resist damage from salt and sand in the marine environment.

Carbon fiber propellers

The SwellPro SD4 utilizes tuned and balanced 12” quick-release carbon-fibre propellers which are proven, durable and unaffected by marine corrosion. Their stiffness and accuracy of pitch make these an ideal solution for high-performance aircraft. The propellers are secured with quick-release bayonet mounts instead of the more common spin-on propellers that can detach when the drone is on the water.

New Reflux Electronic Motor Speed controllers (ESC)

The SD4 employs new 40A high-speed, digital reflux, energy-saving speed controllers. With fast response, low noise and integrated heat management the SwellPro SD4 has shorter braking distances, more stable flight and lower internal temperatures to help ensure flight safety and reliability.

Integrated Anti-collision Strobe

On the top of the SD4, a bright white aircraft anti-collision strobe helps the pilot and other aircraft pinpoint the drone in low-light and darkness - meeting the regulatory requirements of many regions. The strobe can be activated or deactivated in flight by the SwellPro app.

Fully digital radio systems for clear, long-distance transmission

Using new advanced wireless digital radios, the SD4 can broadcast its image up to 5km away while airborne. Innovative adjustable antennas can be setup to maximize range depending on the requirements of the mission being flown. When flying just 0.5m above the water, range is still up to 2.8km and floating on the water surface the transmission range is 500m.


Unlike many other drones, the SD4 allows for multiple devices and apps to be simultaneously connected to the drone’s flight systems either by multipoint WiFi, ethernet or serial interface.


When the drone turns upside down on the water for any reasons, Power-Flip feature turns the drone back to the normal state to take the control back.

Dynamic Return to pilot

The SplashDrone 4 constantly records the GPS position of the remote controller, allowing the aircraft to always return to the pilot‘s position even if they are on a moving boat far away from the original take-off point.

Intelligent Follow me

Actively track the position of the pilot at a constant angle from the front, side, and back with the camera always pointing to the subject.

Orbit Follow

Automatically follow and orbit around a moving object at a chosen radius.

Unrivalled-performance Propulsion System

The more powerful 740Kv Motor, 40A ESC together with optimized aerodynamic design allow for tight, responsive, and total control of SplashDrone 4 in any challenging weather conditions.

Smart Battery

The new slide-in smart battery has an internal battery management system for real-time power monitoring and protection both in charging and discharging, ensuring battery health, safety and longer lifespan. The 6500mAh high-performance lithium technology cells provide up to 30 minutes of flight time.

The SD4 smart battery provides:

  • Real-time power monitoring and alerts
  • Integrated balance charging to ensure battery health, safety and long life by constantly monitoring battery health, state-of-charge and temperature.
  • Simpler battery storage and maintenance as the controller manages battery health even when not in the aircraft.
  • Fast, slide in battery replacement. Integrated connectors allow for wire-free installation and replacement.
  • Battery charging and usage data logging to allow for better battery management and event recording.

The SwellPro Navifly APP

The newly-developed SwellPro Navifly APP enables logging, planning, recording of missions as well as the control and parameter setting of cameras and other modules in flight.

Cruise mode

Automatically fly at a designated speed and direction.

Tap to fly

Autonomously fly to a selected location on the map at a predetermined altitude and speed, and hover awaiting further commands.

Waypoint mission planning

Pre-plan a mission by selecting a series of waypoints on the map with adjustable speed, height, hover time and camera angle at each point.

Grid mission planning

Connect up to 256 waypoints to form a mission area planning and the drone will follow an uniform grid pattern flight path at the selected speed and interval.

SplashDrone 4 offers API for third-party software to gather data from sensors and to configure its control of aircraft, gimbal, camera, and third-party add-ons.

SDK allows deep integration of third-party add-ons to SplashDrone 4. Together with API, SplashDrone 4 is truly a multi-purpose & multi-functional platform for your imagination.



Waterproof Rating: IP67
Weight(include battery and propellers): 2.18 kg
Axis Diameter: 450 mm
Max Ascend Speed: 4 m/s
Max Descend Speed: 4 m/s
Max Flight Speed: 22 m/s(ATTI), 10 m/s(GPS)
Max Tilt Angle: ATTI: 12.5°; ATTI (fast): 25°
Max Altitude from Takeoff Point: 120m (GPS) / ATTI - no limitation
Max Wind Speed Resistance: 72 km/h | 20 m/s | 39 knot
Max Flight Time: 30 mins (no wind & no load);
(approx. 25 mins with GC3-S,approx.15 mins with load of 1.5kg)
Hovering Precision: ±0.5 m (vertical); ±0.5 m (horizontal)
Max Flight Distance: 5.0 km
Max Payload Capacity: 2.0 kg
Flight Control: Hawk
Digital Video Transmission: MultiSync
Motor: #3509 - 740Kv (special coated)
ESC: 40A (flux)
Propellers: #1242 carbon fiber quick release propellers
Motors: #3509 - 740Kv
Operating Frequency: 5180 - 5875 MHz
Transmitter Power (EIRP): FCC/IC: ≤ 24 dBm
CE/SRRC/MIC: ≤ 20 dBm
Working Temperature: -10℃ ~ 40℃
Satellite Positioning Systems: GPS/GLONASS
Pass-through Serial Port: Connect to a third-party device and transfer the data of the third-party device to the remote control
UART: Allows for TTL serial port to TCP, with baud rate of 115200
Wi-Fi Hotspot IP:
Power Input: 12V/2A | 5V/2A

Remote Controller (MRC)

Waterproof Rating: IP66
Operating Frequency: 5180 - 5875 MHz
Transmitter Power (EIRP) FCC/IC: ≤ 24 dBm
CE/SRRC/MIC: ≤ 20 dBm
Real-time Video Transmission:  720P@30fps
Latency: 200 ms (It depends on the actual shooting environment and mobile devices)
Battery: 2S 3600mAh
Working Time: 7 hours
Working Current/Voltage: 0.3A/7.4V
Ethernet Port: IP:
Wi-Fi Hotspot IP: 2020; Default password: 12345678
Mobile Device Mount: Suitable for any size phones;
Tablets require an larger mount(sold separately)
Screen: 2.68 inch, 128x64
Working Temperature: -10℃ - 40℃
Remote Charging time: 3 hours
Power Input: 5V/2A

Intelligent Battery (IB4)

Nominal Capacity: 6600mAh
Voltage: 14.8V
Type: Intelligent 4S LiPo
Watt Hours: 97.68 Wh
Size: 153.6*82.4*48.3mm
Weight: 735 g (±5 g)
Working Temperature: -10℃ - 40℃
Charging Time:  1.5 hour
Max Charging Power: 84 W


Input 100 – 240V, 50/60Hz
Output: 16.8V@Dynamic Current / 5V@1.5A
Rated Power: 84.5 W

SplashDrone 4 Package Contents:

  • 1 x Splashdrone 4
  • 1 x Remote Controller
  • 2 x pairs Propellers
  • 1 x Intelligent Battery
  • 1 x Power Adapter
  • 1 x Power Cable
  • 1 x RC Barrel Power Cable
  • 1 x Micro USB Cable
  • 1 x Hex Allen Key
  • 2 x Hex Countersunk Screws
  • 1 x Barometric Vent (spare)
  • 1 x User Manual
  • 1 x Tripod Mount Adapter
  • 1 x Case 

SPLASHDRONE 4 User Manual V2.9


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