SKU: 74816989558

Hobbywing SeaKing 120A V4 Brushless Marine ESC

Sale price$64.76 Regular price$71.95
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Description

Hobbywing SeaKing 120A V4 Brushless Marine ESCHigh Performance 6S Capable Electronic Speed Controller The Hobbywing SeaKing 120A V4 Brushless Marine Electronic Speed Controller (ESC) is designed to deliver exceptional performance for marine applications. With advanced waterproofing, built in Bluetooth functionality, and a robust power management system, this ESC is ideal for competitive racers and RC boat enthusiasts. Engineered for reliability and convenience, it offers seamless integration with

High-Performance 6S Capable Electronic Speed Controller

The Hobbywing SeaKing 120A V4 Brushless Marine Electronic Speed Controller (ESC) is designed to deliver exceptional performance for marine applications. With advanced waterproofing, built-in Bluetooth functionality, and a robust power management system, this ESC is ideal for competitive racers and RC boat enthusiasts. Engineered for reliability and convenience, it offers seamless integration with modern technology to provide a superior racing experience.

About the SeaKing 120A V4 ESC


Unmatched Waterproofing & Cooling

Featuring an IP67 protection rating, the SeaKing 120A V4 is designed to withstand water, dust, and splashes under normal usage conditions without requiring additional waterproofing treatments. Its dual-channel water cooling system enhances heat dissipation, ensuring the ESC maintains safe operating temperatures during intense use. For added protection, the ESC includes a spark-proof circuit and capacitor overheating safeguards, extending its durability in demanding environments.

Integrated Bluetooth & Data Logging

The built-in Bluetooth functionality simplifies ESC programming and firmware updates. Users can connect directly to the "HW LINK V2" app on their mobile devices to adjust settings, view historical data, and monitor performance in real-time without additional hardware. The ESC's internal logging module captures up to ten minutes of operational data, enabling post-run analysis through the app for optimal tuning and maintenance.

Advanced Power Management

The SeaKing 120A V4 is equipped with a powerful switch-mode BEC with selectable output voltages of 6V, 7.4V, and 8.4V. This ensures compatibility with high-torque and high-voltage servos for precise and responsive control. Additionally, the Freewheeling function enhances deceleration and steering control, while the AUX external control channel allows for real-time parameter adjustments using the remote, ensuring unparalleled control during competitive races.

Features:

  • IP67 waterproof and dustproof rating
  • Dual-channel water cooling system
  • Built-in Bluetooth for app connectivity
  • Internal data logging for performance tracking
  • Spark-proof circuit for high-voltage protection
  • Switch-mode BEC with 6V, 7.4V, and 8.4V output options
  • Freewheeling function for enhanced deceleration and control
  • AUX external control for real-time parameter adjustments
  • Eleven programmable parameters for racing customization
  • Capacitor overheating protection

Includes:

  • (1) SeaKing 120A V4 Brushless Marine ESC
  • Product Manual

Specifications:

Suggested Application RC Boats (Max. Length 39.37in)
Motor Type Brushless
Input Voltage 2-6S LiPo (7.4-22.2V)
Continuous Current 120A
Peak Current 500A
Dimensions (LxWxH) 2.55x1.43x0.89in (64.7x36.3x22.5mm)
Weight 4.36oz (123.5g)
Motor Limits -
BEC Voltage 6V/7.4V/8.4V (Switch-Mode)
BEC Continuous Current 8A
BEC Peak Current -
Motor Connector Solder
Battery Connector Solder
Motor Wire 12AWG
Battery Wire 12AWG
Programmable Yes, through "HW Link V2" App (iOS & Android)

*Tech Note: This ESC does not have reverse polarity protection. Ensure proper connections are made as outlined under step 5 per the owner's manual. Reversing polarity will damage the ESC.

**Tech Note: Always disconnect the battery after use. The ESC draws a small current when connected even if the system is powered off, which can fully drain the battery and cause damage.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 74816989558

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Scott Liske
Boise, US
★★★★★ 5
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Color: 7*5in Cube LED Pod
Very bright, good quality
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 12, 2026
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Riik
Lowell, US
★★★★★ 5
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Color: 4*2.5in Cube LED Pod
Definitely more than I expected. .. dang good product and easy to install
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Reviewed in the United States on April 11, 2026
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rkruz
Pawtucket, US
★★★★★ 4
Easy Install Onto Jeep JKU, No Switch Backlight or Mounting Holes, Great Customer Service
Color: 5in Cube LED Pod, Color: 5in Cube LED Pod
I installed the Auxbeam 5" 168W LED Cube Pods onto my Jeep JKU Anniversary Steel Bumper. It was an easy install with some YouTube videos to help me snake the cables into the cab. The unused holes in the steel bumper were the perfect size to fit the mounting bolts on the pod lights, and there was plenty of room to reach under the top edge of the bumper to install the nuts with some Loctite. To snake the provided cable through the firewall, I had to remove the installed socket. This was easy to do by simply recessing the retainer clip on each pin, taking a picture of the wired connector before releasing the wires so I knew how to reassemble, snaking the connectorless cable through the firewall into the cab where the pins were then reinserted and locked into the connector. I dressed the cable by zip tie to the existing wire harness at the top of the engine bay. In the cab, I pulled the side panel from the dash (driver's side) and made a small hole for the cable in the panel. After cleaning the dash with alcohol, the adhesive-backed switch seems to hold nicely in place. The lights were very bright and did a great job of illuminating the front and sides of the trail ahead of me. No backlight on the switch, which is a necessity, and I dont understand why that feature is not present. Also, there is no through hole to mount as the adhesive back won't stay attached, so the lack of a mounting hole is a big negative as well. 5 Month UPDATE: One of the lights got water inside. I noticed two screws that hold the glass cover were loose on the bottom of both sides. The other light also had the same loose screws but no water under the glass. I contacted Auxbeam, and they replaced the entire set in 2 days. Very awesome customer service.
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Reviewed in the United States on December 25, 2023
K
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Kevin Sanguansukdikosol
Birmingham, US
★★★★★ 5
Brightness and quality
Color: 4*2.5in Cube LED Pod
Got this for my 2024 Crosstrek. Got this one specifically due to its functionality that I wanted, quality for the price and it looks great especially DRL. I leave the Amber cover on most of the time. If you want the DRL to be on while the car is on, you can do that but it has to be rewired which I did. Love the brightness. I’ve been having this on my Crosstrek for a few months now and have no issues.
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Reviewed in the United States on March 3, 2026
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Thomas Chapman
Omaha, US
★★★★★ 5
Bright lights
Color: 4*2.5in Cube LED Pod
Installed these on my Bronco as ditch lights. Very bright light and I like that you can have them be white or put the cover on them for and amber light look. Took about 30 minutes to install and wire to the upfitter switches. They shoot a wide angle covering your blind spots on dark roads. I got these to replace a three inch ditch light. They're made from heavy duty metal and stand up to the extreme weather. I like them so much that I purchased the seven inch lights and install them on the front bumper. For what they cost it was a price that I couldn't pass up. I highly recommend these lights.
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Reviewed in the United States on January 17, 2026

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