Seahorse SE-300 Protective Case Without Foam
$46.11
Price: $46.11
(as of Oct 31, 2025 23:55:45 UTC – Details)
Seahorse Protective Cases keeps your valuable equipment safe. Close and latch your Seahorse cases to automatically safely seal your gear against water, air and dust. Its tough with Acuform foam or dividers will keep your camera, video or high cost equipment safe from impact, providing safe, secure protection from the elements. Built-in padlock holes give extra safety. Seahorse optional locking latches give added security and keeps out prying hands.
Tough & Versatile Protective Case The Seahorse 300 is a rugged, small-sized protective case trusted by experts. Designed for secure storage of tech, firearms, cameras, and drones, it’s perfect for boating, yachting, or recreational water activities. With its durable polypropylene construction, QuickSnap Latches, and IP67 waterproof rating, the Seahorse 300 keeps your gear dry, safe, and protected from the elements, wherever you go.
Marine-Ready with High Visibility Ideal for water-based activities, the Seahorse 300 comes in bright SOLAS Orange and Yellow colors, ensuring high visibility. This marine case is designed to float with contents up to 9 lbs, making it easy to spot and retrieve if dropped in water. Whether on a boat or yacht, the SE300’s buoyancy and visibility make it the perfect case for safeguarding gear during marine adventures.
Built to Withstand Harsh Environments Engineered to be virtually indestructible, the Seahorse 300 case is waterproof (IP67), crushproof, dustproof, and impact-resistant. Tested to MIL-STD 810F standards, this rugged case offers unbeatable protection in the harshest conditions. Whether you’re hiking, traveling, or enjoying outdoor activities, it keeps your gear safe and secure from the toughest environments.
QuickSnap Latches & Pressure Equalization The Seahorse 300 features signature QuickSnap Latches with an automatic Flip Latch Pressure Equalization System. This system maintains an airtight, IP67 waterproof seal and equalizes pressure when opened, preventing damage to sensitive equipment. With a molded comfort grip handle, it’s easy to carry and ensures secure closure, making it ideal for travelers and adventurers alike.
TSA Compliant & USA Made with Lifetime Guarantee Approved for TSA air travel, the Seahorse 300 meets ATA-300 standards and includes integrated eyelets for TSA-approved locks. The case’s sturdy design ensures your gear stays safe in transit. Proudly made in the USA, Seahorse offers a lifetime guarantee against manufacturing defects, ensuring your case lasts a lifetime, protecting everything from electronics to emergency kits.
Customers say
Customers find the dry box case to be of excellent quality, with solid construction and a truly waterproof design that keeps contents dry. Moreover, the case is praised for its secure latches, perfect size for essential items, and durability, with one customer noting it handles jobsite conditions well. Additionally, customers consider it good value for money.
DoinStuff –
A fabulous box! Sealed, dimensions worked perfect for me.
I have several rechargeable NiMHh batteries, and now I seem to be collecting Li-ion, LiPo, other various types to add to the collection. The Lithium batteries are deemed more dangerous than other types, although that can be disputed. You may find the vast majority of storage boxes for lithium baatteries, i.e. 18650, 14500, 10440, 16430, etc. are all small sqare ones that hold 4 batteries. This is because you aare not supposed to keep all your lithium based batteries together in case one does catch firee. The problem is I ended up with all these 4-slot battery boxes cluttering up the place.Now let’s face the facts, I’m not going to spreead battery boxes throughout the house to keep them seperated, I’m going to keep all my spares in one place. I thought of a military ammo can, which is sealed, then there would be no fire. As long as the batteries are in plastic cases first that would be OK, but metal boxes have the potential to short-circuit a battery if it ids not encased. There are no organizers for these small boxes for safety reasons.It may not be perfect, but I found this Seahorse 300 Protective Case made of plastic, sealed, and battery boxes fit perfect. The square ones, or I bouthe the Whizzoptech 10 battery trays (which run VERY tight on lithium batteries), or the DOUFIRE Battery Storage Containers with AA/AAA converter cases (I tried the converter cases, NONE of my 10440’s fit), and I bought some 8 x 18650 boxes which are plentiful here on Amazon. From the pics you will see this is a very nice fit! Yhe only thing left is I ordered some 1″ foam I am going to glue in toe lid to fill the space and keep the boxes snug. If I didn’t I could fit more in butr I don’t need to.The case is fabulous, heavy duty, I think I could run over the thing with my truck and it would be just fine. I mean it is SOLID! If you are hesitant to pay $21 for a plastic box don’t be. It’s worth every penny. It came with a catalogue of their product, they have some very nice boxes!
Jason R. –
Solid built
Best cases anywhere. Fits the 18m perfectly. IYKYK.
Phoenix Rising –
Not a Pelican But well worth the money!
I’ve ordered two of the Seahorse SE-300 Cases and have had one of them in use for two years now for use in my truck for carrying a mirrorless DSLR and later a Sony RX10 Mk III camera kit (did the internal foam layout / install myself), and the case has held up extremely well both in the North Carolina Summer heat and Winter along with some jostling around with no warping or damage to my cameras or equipment so it had done everything I have asked of it well enough that I purchased another one. The only thing I haven’t tested is just how waterproof they are, but in checking the seal contact area even after the temperature extremes the seal has a good indentation with no gaps anywhere to where I wouldn’t have an issue taking my two year old case canoeing etc for fear of my equipment getting wet. Now if I were white water rafting?… Well I’d probably buy a Pelican just because, but for most regular demands this is a quality case that won’t break the bank.
The Big G –
Fantastic, Durable, Lightweight
I’ve got 3 of these cases now to store & transport a rather expensive wireless control system and these cases live up to their hype.Completely waterproof, and I can jump on them (I’m 200+ lbs) and they don’t even flinch. The latches are easy to use, and feel very durable.The only concern is that the plastic is probably a little susceptible to scratching, since its a softer/flexible style. But aside from this, I would highly recommend people buy this case to store your goods.Amazon was also pretty much the best price i could find for these cases, although they keep increasing the price of the cases (gone up $6 in the last 3 months).
S.H. –
Excellent Case!!
For the money, this is a GREAT case. I bought it to use as a small emergency kit to take with me when I am kayaking down the river. I have fire starting gear, first aid gear, and the all important T.P. that I keep in it. It has made ALOT of trips with me over the past few months, and it hasn’t leaked any. Usually it just gets some water splashed on it, but it has gone through a few HEAVY rain storms as well. I haven’t ever opened it and found any water inside. I can’t fully explain how happy I am with this case! It is made from thick plastic and should last for many years of use. I will purchase another one so I will have a little more storage.Seahorse has done a great job on their products!!!!!!
Adroc3905 –
Sweet case
I have worked with Pelican, Storm and some off brands (Duratool) and this case is very well constructed and amongst the best thus far in a quality to price ratio. The hinges operate in a smooth fashion, the watertight seal works great and the latches are solid and sturdy. These cases come with panel insert holes pre-casted into the body (top and bottom) unlike most other higher-end brands. Cosmetically the case is flawless with smooth lines and rounded edges. This partially project required me to drill into this case at which time I realized the wall thickness is approx. 5/8â solid plastic (which really impressed me). Seahorse is a made in the USA and the workmanship is ideal. I will definitely look to Seahorse for my future case needs.
john –
Outstanding !
Excellent quality. Bought three colors; they are all my favorite. Strong, accurately made, closure clips are secure yet easy to use. Way beyond the best tool boxes I have ever bought. Would expect to last decades. Just wish Seahorse made storage trays to fit inside, for money, tools, parts, etc. Bought these for grandkids after trying several steel, locking money boxes. Those were nice but only came with two keys and replacements were $25 each. Sent the steel ones back and somehow stumbled onto these at Amazon. If these were advertised beside steel money boxes I believe the steel ones would go out of business. The grandkids will be delighted. They are drilled for padlock lock in center and corners of lid. Only regret is not buying a couple for myself.
Isaac Hull –
The latches are my only concern, but it is sturdy.
Well made and sturdy but I’m suspicious of the latches and not sure if it’d spill all the contents in a drop. I use it to store small gagits in a waterproof environment (the case itself).
Fortiz –
Compre este estuche (maleta) para un multÃmetro con sus accesorios y quedo perfecto, igual sirve para cámaras, videocamaras compactas, o algún dispositico electrónico que se quiera proteger de golpes e incluso del salpicaduras de agua. No tiene rebabas (excedentes de plástico ) y su calidad es muy buena, lo recomiendo ampliamente.
Ricardo –
Buen productl
Amazon Customer –
I use this case to carry around mixed screws and drill parts. It has been thrown around and is still very durable. It is great for small projects.
Ruben Ernesto Flores Macias –
Producto básico, espero los broches de cerrado soporten el uso normal
Gabriel Hillier-Lowden –
Great case and excellent value. I use it as a tool case for the boat and iâm very satisfied with it.