Godox WT40D Waterproof Daylight Tube Light
Best current price£232.00from Wex Photo Video
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Product Information
Full details
The Godox WT40D is an essential lighting tool for underwater photographers and videographers who need reliable, high-quality illumination in deep-water environments. Rated for depths up to 40 meters, this 15-inch tube light provides a soft, daylight-balanced glow that enhances clarity and color accuracy in aquatic shots. While it excels at revealing marine life, users should be aware that wireless app control is limited to surface use, as signals do not penetrate water effectively at depth.
All features
| Brand | Godox |
|---|
Extended Product Information
FAQs
Can I use the WT40D deeper than 40 meters?
No, the device is rated for a maximum depth of 40 meters. Exceeding this depth risks permanent damage to the casing and electronics.
How do I charge the light?
Use the provided charging cable with the port located behind the waterproof cover. Ensure the seal is perfectly clean before closing it again.
Does it work as a video light and a photography light?
Yes, it is designed for both. Its continuous, daylight-balanced output is ideal for videography, and it can also serve as a constant light for macro photography.
Are the light effects available underwater?
Yes, you can cycle through the 13 dynamic light effects using the on-board controls while submerged.
Is the light color adjustable?
The WT40D is daylight-balanced, providing a consistent professional-grade white light suitable for most underwater color-correction needs.
Troubleshooting
Light does not automatically brighten when submerged
Check for obstructions near the water-sensing elements and ensure the light is fully submerged; clean any salt residue that may be covering sensors.
App will not connect to the light
Ensure you are using the app on the surface, as Bluetooth signals do not travel through water. Ensure Bluetooth is enabled on your phone and the light is powered on.
Visible moisture inside the clear casing
Stop using the device immediately. Open the charging port to allow internal ventilation, keep the unit in a dry place, and contact Godox support for a seal inspection.
Pros and Cons
Pros
- Durable build suitable for deep-sea use up to 40 meters
- Automatic brightness adjustment upon submersion
- Intuitive controls with high-visibility fluorescent buttons
- Compact 15-inch form factor is easy to carry on dives
- Versatile mounting options for professional rigs
Cons
- App-based control is not functional underwater
- Length may be restrictive for some ultra-compact macro setups
- Requires careful seal maintenance to ensure waterproof integrity
Setup, Compatibility & Care
Before taking your WT40D into the water, ensure the charging port cover is tightly sealed and free of any debris, sand, or salt buildup. Even the smallest grain of sand can compromise the seal. To set up, simply mount the light to your tray using the provided 1/4-inch mounting points. When using the light for surface production, you can pair it via Bluetooth to the mobile app for quick adjustments. After every dive, rinse the light thoroughly in fresh water to remove salt crystals, which can corrode components over time. Dry the unit completely with a microfiber cloth before opening the charging port or storing it in a case. Avoid exposing the light to excessive heat or direct sunlight when not in use, as this can degrade the waterproof seals.