What are the inside dimensions?

I would say useable inside space is 6" X 3" X 1" - especially if you intend to use it for a larger cell phone. The top of the storage area is larger than the bottom, hence the other dimensions in the other answers. I like my cell phone to sit flat on the bottom and not at an angle.

If this fell in the water with about a pound of weight in it would it float

I just tested it for You. I put at least a pound worth of stuff in it , which filled it almost completely. About 1/4 of the box remained above water. I hope this helps You.

Is it fully submergible?

Someone gave me a used one with the clamp missing off the long side of the box. I put a piece of toilet paper inside and then submerged the box in a bucket of water. Figured i better check it out before trusting it to protect my phone on the river. Checking every 15 - 20 minutes, I noticed no water inside till around the hour and fifteen minute mark. Even then, it was just a little.

Has anyone tested its durability? Such as dropping it from an extreme height?

I bought about 15 for my white water rafting guides to use in their trips to carry their phones. So far so good. The case has stood up to lots of abuse. As for dropping from height I wouldn't worry about the case but would be worried about any fragile things inside the case as it is not padded on the inside. Hope this answers your question

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Plano 3440-10 Waterproof Stowaway (3400 Series)

Plano 3440-10 Waterproof Stowaway (3400 Series)

Product ID: 4692928

Details

Brand
Plano
Color
Multi
Material
Plastic
Special Feature
Lockable
Style
Regular

💧100% Waterproof Seal

📱Safe for Phones & Valuables

🔒Secure Lockable Latches

¥3057

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Description

💼 Stay dry, stay sharp — your gear’s new best friend.

ROCK SOLID SECURITY - Three cam-action latches ensure your valuables stay locked tight and safe.
COMPACT YET SPACIOUS - 10-liter capacity fits your essentials without bulk—perfect for on-the-go pros.
LIGHTWEIGHT DURABILITY - Rugged plastic build weighs next to nothing but stands up to 5 kg load.
VERSATILE STORAGE SOLUTION - Ideal for fishing tackle, phones, and small valuables—carry what matters most.
ULTIMATE WATERPROOF PROTECTION - Dri Loc O-ring seal keeps your gear bone dry, no matter the conditions.

The Plano 3440-10 Waterproof Stowaway is a compact, 10-liter tackle box featuring a Dri Loc O-ring seal and three cam-action latches for superior waterproof protection and security. Lightweight yet durable, it’s designed to safeguard phones, fishing gear, and small valuables with a lockable, rugged plastic case ideal for active professionals who demand reliability on every adventure.

Specifications

ASIN	B00469G31G
Best Sellers Rank	#1,726 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #7 in Fishing Tackle Boxes
Brand Name	Plano
Capacity	10 liters
Closure Type	Latch
Color	Multi
Customer Reviews	4.7 4.7 out of 5 stars (7,511)
Global Trade Identification Number	00024099134408
Included Components	Great Product
Item Dimensions L x W x H	7.38"L x 4.5"W x 1.75"H
Item Type Name	Great Product
Item Weight	0.27 g
Lock Type	Latch
Manufacturer	Plano
Manufacturer Part Number	344010
Manufacturer Warranty Description	Warranty
Material Type	Plastic
Maximum Weight Recommendation	5 kg
Model Number	344010
Number of Compartments	1
Number of Items	1
Opening Mechanism	Latch
Other Special Features of the Product	Lockable
Package Quantity	1
Pattern	Solid
Recommended Uses For Product	Für Aufbewahrung
Shape	Rectangular
Storage Volume	7375 liters
Style Name	Regular
UPC	024099134408
Unit Count	1 Count
Water Resistance Level	Waterproof

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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TrustScore 4.5 | 7,300+ reviews

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Excellent communication throughout the order process. Product is perfect.

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Received my product in pristine condition. Great service overall.

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¥3057

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Japan.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks ago

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The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

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