Jérôme Dreyfuss is a French fashion and accessory designer. He turned his attention to leather goods through its eponymous brand created in 2002, it markets lines of bags, small leather goods and shoes for women and men.


After having imagined a portable battery dressed in leather, the designer Jerôme Dreyfuss wishes to continue his quest for functional fashion through a refined and innovative everyday accessory, in the image of the women that he honours. So, together, we have created a leather pouch that embeds a wireless charging solution. This handcrafted leather pouch includes a technology that allows to charge a smartphone while keeping the style of the House. Dreyfuss is a designer who doesn’t follow trends and finds his inspiration in women’s everyday life. This co-designed accessory is the perfect representation of this by combining the useful and the beautiful.


To carry out this project, our team were in charge of the development of the proof of concept and final prototype. We also managed the production as well as the certifications.


To create a pouch allowing to easily charge a smartphone, we thought about embedding a wireless charging system.
To do so, we made a first module that brought together the different selected functions :
Namely the ability to charge a smartphone wirelessly in both directions (outside and inside the pouch), a 3000mAh battery capacity, an On / Off function using a piezoelectric touch plate and a micro-usb port to charge the pouch.

Our charging system works inductively with all the latest smartphones


The challenge was to conceal the battery to make it invisible. This means that the electronic system we developed had to be tailored on the original design of the pouch, which was already defined.

To do so, we used our Fashion Tech integrator ‘know-how’ in order to let the electronics blend into the pouch in the most efficient and discreet way.

The whole system was covered with goatskin so the final product wouldn’t look like carrying any technology. This way, consumers will be able to be satisfied with the pouch in the style of the House while benefiting from the technology that will be subtly hidden.


Once the production was finalized, a series of quality control tests was taken to ensure the proper functioning of every product.


Any product including electronics is subject to certifications. The certifications to be compliant with depend on the selected selling countries : CE for European Union, FCC for the USA, KC for Korea, PSE in Japan or MSDS, UN38.3 and Air/Sea transport identification for global transportation. We challenged the different certification organizations to obtain the most competitive prices and managed the process such that our client could sell it worldwide in its different stores.

« Finding a practical model seems much more important to me than being trendy, especially as men who want to be fashionable at all costs are often old-fashioned. Just like my bag, I try to be easy to live with, not bulky and as cool as possible. »
Jérôme Dreyfuss for the article of Le Figaro Madame « What are they hiding in their bags? » – 03/04/18