Our History
2010
A Vision Takes Shape
Founded in Tokyo with the philosophy “Design Evolution For the Future”, we launched our first Ultra-slim Smartphone Case.
Every detail reflected the precision and craftsmanship of Japanese design, establishing DeFF’s enduring promise to blend functionality with elegance.
2012
Building Reputation
As we continued our journey in Japan, we focused on creating innovative designs that combined new materials with thoughtful structures.
Our work began to catch the attention of tech enthusiasts and design lovers, steadily building the reputation that defines DeFF today.
2015
Material Innovation
We began incorporating high-performance materials such as Carbon fiber and Kevlar fiber, crafting accessories that are stronger, lighter, and visually modern.
This step marked our evolution from a simple case maker into a dedicated designer of innovative tech accessories.
2018
Expanding Functionality
We expanded our accessories to include features like magnetic mounts, stands, and card slots, transforming them into practical tools for everyday life.
Through this, we embraced the philosophy of "design as part of daily life", seamlessly blending technology with daily style.
2020
Crossing Borders
We began reaching international markets, forming partnerships and expanding our presence abroad.
This journey transformed DeFF into a global design brand, while always staying true to our Japanese roots.
2022
Global Presence
With design and marketing bases established beyond Japan, we strengthened our ability to create products that resonate across regions.
This global perspective allows us to respond quickly to diverse markets while staying true to our core Japanese design spirit.
2023
Lifestyle Innovation
We expanded into stationery and lifestyle products, launching items like the Refill Pen Jacket.
Through this, we revealed that DeFF is not just a tech accessory brand, but an innovator exploring design in everyday life.
2024
Fusion of Innovation & Culture
We introduced accessories that merge technology with lifestyle culture, making design and innovation a natural part of everyday life. Through this, we embody the spirit of "Evolution Meets Culture".
2025
Leading Tomorrow Together
We released new accessories for the Xperia and iPhone series, combining precise design with premium materials to deliver both Protection and Style.
We continue to push the boundaries of innovation, blending aesthetics with functionality, leading trends in tech accessories, and moving forward together with a new generation of users.
What people
are saying
Marco Kao 3C這款手機殼手感極佳，孔位精準，完美保護手機，而且設計時尚，值得推薦！
TocbgamingThe Kevlar build feels incredibly premium without adding bulk, and the ring stand on the iPhone case has been way more useful than I expected — from filming, to watching videos, to just not dropping my phone on my face in bed.
The iPad mini case might be my favourite though… super slim, but still protective enough for everyday use around the desk and out and about.
3mini._.saving市面上有許多手機支架因為拍攝支架, 常常就滑落掉, 導致拍攝過程不順利。這款的各種角度都能穩穩的自己崗位守住, 如果你也跟我一樣重視細節的夥伴, 可以考慮試試這款磁吸手機支架殼!!!
Karl*****15Die Ware ist top, super verpackt und genau wie beschrieben. Hat meine Erwartungen sogar übertroffen – bin echt mega zufrieden！
Popp*****67The best cover with absolutely nothing to complain about! The side slider isn’t obstructed at all, and it wraps the device securely. The lens area is perfectly protected, so I can use it with peace of mind. The Mag Ring also attaches to the charger without any issues.
Will*****89點讚啦，發貨很快，好貨，希望店家多多優惠，大推～～
Zack*****01This item is a real miracle. It leaves a feeling that you touch a silk, but in practice it is a sturdy and durable case which insures a high level of protection even for the camera section of the phone. I recommend it for those who prefer the quality for the expensive phones.
Mari*****98J’en ai déjà pris plusieurs, super pratique et ça se colle hyper facilement. J’en reprends un pour en avoir d’avance.
Tomu*****77iPhone11Proは5年間使用してきただけあって、ケースのしっとり肌触りのコーティングが剥がれるくらいまでず～っと利用してきました。落とした回数はまあまあですが、ケースに大きな割れは出ず、一部の角の繊維がほどけ始めたところがあるくらい、今回のも長く使用するつもりで、本ケースを購入しました。
ケースの薄さ、軽さは期待通り、MagSafe用のリングが入っているようですが気になる重量増加にはなっていないと感じます。肌触りも新品ならではのしっとりした感じ。装着感も従来と同じ、しっかりと装着できました。前に使用していたケースのように側面にスリットがないため、外すのは大変かもしれません。ただ、eSIMが使えてSIMカードの入替えをしないと考えれば、その不自由さには多少目を瞑れると思います。
今回の購入したのも十分満足できる買い物でした。