Excellent hunt, man! I'll leave you my opinion about this drone:
Pros:
- The 4K camera is its most important feature. A good camera is always crucial for marine documentation and this little friend has it.
- It is compact and its flashlight system greatly aids visualization.
- Whether you're fond of marine life or just want to take pictures underwater for fun, this portable device is perfect.
Con:
- Only 100 meters of cable. It is good for recreational activities, but in case of professional documentation 100 meters is a very small area to move around.