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- GLADIUS MINI Underwater Drone_4K Underwater Drone Camera
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Technical Specifications
| Size | 15.2 x 8.9 x 5.4 inch |
| Battery Capacity | 55.5Wh (5000mAh) |
| 2.5KG | Buoyancy |
| -0.02 lbs – 0.02 lbs | Operating Temperature |
| 14℉ – 113℉ | Maximum Depth |
| 328 ft | Maximum Speed |
| 4Kn (2m/s) | Maximum Rise/Fall Speed |
| 2Kn (1m/s) | Maximum Flow Resistance |
| 2Kn (1m/s) | Battery Life |
| 2h (Depend on working condition) | Battery Cycle |
| CMOS | 1/2.3 inch |
| Aperture | F3.0 |
| Focal Length | 4.0mm |
| ISO Range | 100-3200 (Still camera only) |
| Field of View | 95° |
| Maximum Image Resolution | 12M (4000 x 3000) |
| Image File Types | JPEG/DNG |
| Video Resolution | FHD: 1920 x 1080 30Fps |
| UHD: 3840 x 2160 (4K) 30fps | FHD: 1920 x 1080 120Fps |
| FHD: 1920 x 1080 60Fps | Video Maximum Stream |
| 60M | Video Type |
| MP4 | SD Card Memory |
| Brightness | 2 x 1200LM |
| Color Temperature | 4000K – 5000K |
| CRI | 80 |
| Maximum Power | 2 x 10W |
| Dimming | Manually adjustable |
| IMU | Three-axis gyroscope/acceleration/compass |
| Depth Sensor | +/- 1.64 ft |
Why Buy From Us
We supply the full CHASING underwater drone lineup with factory-direct pricing, English-language technical support and worldwide shipping. Every unit ships configured and ready to dive. For industrial deployments, inspection packages and fleet orders, our team provides configuration guidance, spare-part support and operator training.
Applications
Underwater photography and videography, aquaculture monitoring, hull and infrastructure inspection, search and rescue, scientific exploration, fisheries and recreational diving.
Source: chasing.com
What Underwater Drone Owners Actually Complain About — and What to Check Before You Buy
Independent analysis of 123 public owner discussions, app-store reviews and hands-on reviews of comparable underwater drones (CHASING, QYSEA FIFISH, Geneinno, PowerVision and similar), collected November 2026. 81 distinct first-person problem statements were identified and grouped by recurring topic. These are observations about the product category and competing models, not reviews of this specific product. Quotes are short attributed excerpts; spelling is original.
| Recurring issue owners report | How often it came up | In their own words | What to check before buying |
|---|---|---|---|
| App, Wi-Fi & connectivity | 34 owner reports in this sample | I’m having the same issue can connect To wifi but says no internet, cannot Do an update or use the robot b/c it says no internet connection You can’t download the firmware b/c it says no internet, con— FiFish V6 software "connected without in So now I can't get a connection to the drone and of course the app still says 'disconnected.' I also tried updating the firmware (download it via the app while connected to internet, then connect to t— New V6 won't power on or connect | Under | Verify the companion app is maintained, works on your phone OS, and that firmware updates do not depend on a fragile Wi-Fi link with no internet. |
| Control & stability | 18 owner reports in this sample | To be honest with you, in the beginning I was mainly focusing on QYSEA and the Fifish V6 like you guys are, I was extremely dissapointed after watching Dustin Dunnil's video which shows all the shakin— 2nd Thoughts on Chasing M2 – Cancelled m I was hoping to strap it to a block and use it as a drop camera but the tether broke during a high current retrieval where it wrapped around the prop of the boat, and I haven’t been able to get it to— Advice about buying a BLUEROV2 or CHASIN | Stability in current and controller latency decide whether the drone is usable outside a pool; look for reports from real dives. |
| Battery life & charging | 14 owner reports in this sample | We are using a kite rope thingy that we attach to the tether cable with a carabiner, so we can easily reel the buoy (and with it the drone) back in, should the connection cut out, battery fail or shou— owner report Been suffereing a lot of hadware problems with my Chasing products (0%-battery error, faulty SD-card reader on the drone and so forth) – when the drone finally worked in the water, its pretty nice, go— M2 vs Fifish V6S | Underwater Drone Foru | Compare real-world dive time, not just the headline rating, and confirm spare batteries and chargers are available for the exact model. |
| Tether & cable management | 12 owner reports in this sample | I love my Chasing M2, but the one time I was recovering this heavy fishing net from the bottom, I thought for sure the plastic bracket was going to break, luckily it didn't, but the tether wrapped aro— New Underwater Drone for 2022 – Chasing This is one of the reasons I don't like having the thrusters stuck out on an underwater drone, my Geneinno T1 was like that and the tether always caught on one or two of the thrusters when I moved lef— Fifish V6S vs Chasing M2 Maneuverability | Check the tether length, reel and how the cable is managed in current; snagging and tangling around props or the ROV body are among the most frequently reported field problems. |
| Water ingress & sealing | 3 owner reports in this sample | I had a similar dive in a natural sink hole to 109’ and on the way up the tether snagged and the leak sensor went off.— Flooded main electronics enclosure (bad) I keep running into a issue where dory is not being able to submerge or surface unless I force stop app and restart.— CHASING GO2 App – App Store | Confirm the depth rating, O-ring maintenance and exactly what the warranty covers if water gets in. |
| Setup & learning curve | 8 owner reports in this sample | To learn more www.chasing.com ## Ratings & Reviews – 2.2 out of 5 26 Ratings – ### App needs a lot of work 11/29/2019 Nosugarplz The app does work and I can control dory but it seems as if there was l— CHASING GO2 App – App Store May 23, 2021, 05:03 PM hookpilot Registered User # FIFISH V6 troubleshooting Unable to see depth readouts, attitude display in lower left of iPhone, unable to see compass heading display operate.— Qysea Fifish v6 Underwater FPV 4K drone | Budget time for calibration, firmware and a first shallow-water session, and check clear manuals exist. |
Buyer questions answered from real owner feedback
- Do owners report problems with app, wi-fi & connectivity on underwater drones?
- Yes — it appeared in 34 owner reports in this sample. Verify the companion app is maintained, works on your phone OS, and that firmware updates do not depend on a fragile Wi-Fi link with no internet.
- Do owners report problems with control & stability on underwater drones?
- Yes — it appeared in 18 owner reports in this sample. Stability in current and controller latency decide whether the drone is usable outside a pool; look for reports from real dives.
- Do owners report problems with battery life & charging on underwater drones?
- Yes — it appeared in 14 owner reports in this sample. Compare real-world dive time, not just the headline rating, and confirm spare batteries and chargers are available for the exact model.
- Do owners report problems with tether & cable management on underwater drones?
- Yes — it appeared in 12 owner reports in this sample. Check the tether length, reel and how the cable is managed in current; snagging and tangling around props or the ROV body are among the most frequently reported field problems.
- Do owners report problems with water ingress & sealing on underwater drones?
- Yes — it appeared in 3 owner reports in this sample. Confirm the depth rating, O-ring maintenance and exactly what the warranty covers if water gets in.
- Do owners report problems with setup & learning curve on underwater drones?
- Yes — it appeared in 8 owner reports in this sample. Budget time for calibration, firmware and a first shallow-water session, and check clear manuals exist.
Method: public owner posts and reviews were grouped by recurring topic; only topics raised independently by at least two owners are listed. Counts reflect this 123-source sample, not the whole market. Source: Public owner discussions and app-store reviews of comparable underwater drones (underwaterdroneforum.com, talk.seabits.com, Apple App Store, Google Play, independent hands-on reviews), collected via Exa + crawl4ai. Amazon's review dataset returned a sign-in wall for every product, including Bright Data's own documented sample URLs, so Amazon customer-review text could not be retrieved; these are public real-owner complaints instead.. Collected 2026-11-12.