It only has 64GB of onboard storage, plus two microSDXC slots, which combined add up to another 256GB. That makes 320GB in total.
Utah-based Saygus hasn't gone public on pricing yet, though pre-orders should start this month. It will start shipping in "early 2015".
It's only the company's second phone, though it's clear it's out to do things a little differently to the competition. Aside from the ridiculous storage, what are the specs like?
Inside is a 2.5GHz quad-core Qualcomm Snapdragon processor with 3GB of RAM. It only runs Android 4.4.4 KitKat, not Lollipop, alas. There's no word on whether it will be updated to Lollipop, but we'd wager so.
Read more: The best mobile phones to buy
It totes a 5-inch 1080p screen, with a body made of kevlar and aluminium. It manages to stay a shade under 10mm fat, which is chunkier than the likes of the 6.9mm iPhone 6.
The battery is 3,100mAh, which should help it last a long time. There's a 21-megapixel rear camera and a 13-megapixel front-facer for selfies and video calls. Extras include a waterproof rating of IPX7, built-in QI wireless charging and a biometric fingerprint scanner for easy unlocking.
So there you have it. A sign of things to come? Or a soon-to-be-forgotten novelty? Let us know what you think.