





COROS Nordic
COROS Hydrop
- Only compatible with COROS NOMAD, VERTIX 2, VERTIX 2S.
- Map the underwater terrain to pinpoint key structures like drop-offs, ledges, and submerged timber, prime holding areas where big fish set up and feed.
- Thermal Tracking: Monitor vertical water temperature to find the active "bite" zone instantly.
- Visual Clarity: Optical sensors analyze water color and clarity to help you adjust lure size, color, and retrieve speed for optimal presentation.
- Ultralight Design: Only 10.6 grams—as light as your standard lures and easy to cast with any rod.
- Always Ready: Up to 13 days of battery life and 5ATM water resistance for the toughest days out.
- Watch Integration: View live underwater charts and data directly on your wrist in real-time or on your App at anytime.
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Meet your new underwater scout
Fishing is often a sport of what-ifs. What if the water is colder ten feet down? What if that drop-off is deeper than it looks? COROS HYDROP is a new fishing sensor that provides the data you need for a more informed cast.
HYDROP packs advanced sensors into a tiny, rugged capsule that talks directly to your COROS NOMAD. It's easy-to-use set-up means that you'll gain more information to help you fish better from the first cast.
LEARN MORE ABOUT THE WATER

Using optical sensors, HYDROP measures transparency and identifies the water's true color profile. It tells you exactly how much light is penetrating the depths so you can pick the lure color & the lure size that will actually pop.
STAND OUT IN THE WATER

Fish are picky about temperature, and the surface temp rarely tells the whole story. HYDROP tracks water temperature vertically as it moves through the depths, helping you find that "golden" layer of water where the fish are actually active and feeding.
HUNT THE THERMOCLINE

HYDROP maps out the water below with total precision – identifying drop-offs, hidden ditches, and submerged timber where big fish stack up, giving you a clear map of the strike zone.
SEE THE FLOOR
LIGHTER THAN YOUR FAVORITE LURE
Weighing in at just 10.6 grams, HYDROP is lighter than a standard half-ounce spinnerbait, meaning you can cast it with the gear you already own without worrying about straining your line or your rod.
CONNECT WITH YOUR WATCH
The information recorded on HYDROP is sent directly to your watch & App, creating visual charts and diagrams to make quick decisions with confidence.
















