Why we love Red Radish

Hot Stone:
All the smartphone cables you need on a single key ring

Compact is practical, especially when you’re on the move. The Red Radish® charger and data transfer set is the world’s smallest and most compact all-in-one set for your mobile devices. It means you can always have cables to hand if your battery runs down or you want to transfer data, as you can take the solution with you on your key ring, in your handbag or trouser pocket – smaller than a credit card and as light as a pen.

previous arrow
next arrow
previous arrow
next arrow

The world’s most compact charger and data transfer set!

Of course it is technically possible to build an even smaller charger, but it would not meet strict American and European safety requirements for FCC and CE certification, as it could not accommodate the required distance to the power supply connector pins or the required volume for heat generation within the charger. At Red Radish we worked at extremely small scale, precise to the millimetre, to meet the requirements of both standards and to provide the necessary internal volume for heat generation. Next we fitted the charger and all standard cable connections into a small case to create a product that is as compact as geometrically possible.

Other features:
• Six different combinations for data transfer between standard devices
• Charge any device with Lightning, USB-C or micro USB connectors
• Easy to transport thanks to the compact design – smaller than a credit card
• Attractive design and appealing tactile quality, available in 10 exciting colours
• The silicone coating on the connector provides more grip
• Charge with a US or EU plug anywhere in the world


Never run short of battery again

No need to do without your smartphone while you’re out and about: now you can charge your mobile, tablet, or notebook anywhere. Thanks to the innovative design, no additional carry cases are required to transport the various cables and adapter – just a trouser pocket. At under 60 grams and smaller than a credit card, you’ll barely notice that you’re carrying a multifunctional tool everywhere you go – until you need it in a hurry.


Transfer data to and from any device

All cables and adapters are compatible. Six combinations allow you to exchange data between a wide variety of information carriers: PC to mobile phone, Apple to Samsung, old to new generation. Your versatile partner for everyday living in an all-in-one set.


Designed to reflect your individuality

Hot Stone comes in 10 exclusive colours to match your style; cutting-edge, elegant, striking. The charger is coated with silicone and the aluminium cable connectors are embedded into a silicone pad with silicone cable, and their matte finish presents a striking contrast with the glossy case. Its unique exterior was conceived in Berlin, UNESCO City of Design, and this set is the debut product for new start-up company Red Radish®.


Making everyday life easier in future

The cleverly designed set combines high-quality materials, is sustainably produced and resistant to wind, weather, and everyday bumps and scratches. In this way we not only protect resources, but also eliminate avoidable waste.


Guaranteed safety

Red Radish® Hot Stone meets the exceedingly strict safety standards of the USA and EU. Thanks to FCC and CE certification, we guarantee the full functionality of our set.

previous arrow
next arrow
previous arrownext arrow
previous arrow
next arrow
previous arrownext arrow

Choose your style!

Red Radish comes in many various colors. So you can be sure that it suits your personality and wardrobe perfectly.

One Cabel,
all the options!

The cabel can be combined with the three accompanying connectors to get nine different options to connect all your devices.

previous arrow
next arrow
previous arrow
next arrow
Technical specifications

Connection possibilities

  • USB-C to micro_USB
  • USB-C to lightning
  • USB-C to USB-C
  • USB to micro-USB
  • USB to lightning
  • USB to USB-C


Size and weight of the case and cabel


  • l- 3.34 in
  • w- 2.12 in
  • h- 0.79 in

Cabel (without connectors):

  • l- 6.18 in

Total weight:

  • 2.11 oz



  • rubberized surface for nice haptic sensation


  • silicone


  • high quality ABS plastic


  • high-grade aluminium

Scope of supply

Complete set contains

  • A sleek and sturdy carrying case
  • A micro-USB to USB-c base cable
  • A micro-USB adapter
  • A Lightning adapter
  • A USB-a adapter
  • A US plug mini charger
  • AND a FREE EU plug mini charger

Connection compatibility


  • iPad Air
  • iPadAir 2
  • iPad mini
  • iPad mini 2
  • iPad mini 3
  • iPad mini 4
  • iPhone 5/5s
  • iPhone 6
  • iPhone 6 Plus
  • iPad Pro (10.5“)
  • iPad (9.7“)
  • iPhone 6s
  • iPhone 6s Plus
  • iPhone 7
  • iPhone 7 Plus
  • iPhone 8
  • iPhone 8 Plus
  • iPhone SE
  • iPhone X
  • iPhone XS
  • iPhone XS Max
  • Apple AirPods
  • iPhone 11
  • iPhone 11 Pro
  • iPhone 11 Pro Max
  • Micro USB

  • Kindle Fire HD
  • Kindle HD Fire 7“
  • Kindle HD Fire 8.9“
  • Kindle Paperwhite
  • Kindle Oasis
  • Kindle/Kindle Touch
  • Samsung Galaxy S6
  • Samsung Galaxy S7 / Edge
  • most mobile bluetooth speakers
  • GoPro Hero 5 and later
  • Bose QuietComfort 35 II
  • E-Readers
  • Cameras
  • MP3-Players
  • most Powerbanks
  • most older smartphones
  • USB-C

  • Samsung Galaxy S8
  • Samsung Galaxy S8+
  • Samsung Galaxy S9
  • Samsung Galaxy S9+
  • Samsung Galaxy S10e
  • Samsung Galaxy S10
  • Samsung Galaxy S10+
  • Samsung Galaxy Note 9
  • Samsung Galaxy A8s
  • Samsung Galaxy A9
  • Samsung Galaxy Tab 54
  • iPad Pro (12.9“)
  • iPad Pro (11“)
  • OnePlus 6T
  • OnePlus 3
  • LG G5
  • LG G6
  • LG G7 ThinQ / One
  • LG V40 ThinQ
  • LG X5 Android One
  • LG G8S ThinQ
  • Oppo Find X
  • Huawei Mate 20 / Pro
  • Motorola Moto G6
  • HTC U12 Plus
  • Google Pixel 2 / XL
  • Google Pixel 3 / XL
  • iPad Pro (2018)
  • GoPro Hero 5
  • GoPro Hero 6
  • GoPro Hero 7
  • Nintendo Switch
  • USB-A

  • all conventional USB Ports
  • B2B – Turn elegant functionality into a brand message

    Give Red Radish® Hot Stone to your customers as a promotional gift so they can be positively reminded of your brand – make it really special by adding your logo to the case.

    Berlin Design

    Global environmental problems and our increasingly complex lifestyles are forcing us to reconsider how we do things – but with an eye to the future rather than by harking back to the “good old days”. The comforts and benefits of modern technology are now indispensable, and indeed ubiquitous in all aspects of life. As such, our vision is all about accepting the challenges we now face and to use innovation and fresh ideas to create a world that is a little bit better and functions more effectively.

    In applying comprehensive solutions to develop our innovative products, we always keep sustainability, usability, visual appeal and efficiency at the forefront, because only by incorporating these criteria into the design can challenges be overcome. Intelligent products should not only consider technical parameters, but also the established practices of our current age. Our debut product, Hot Stone, is another step towards realising our vision.

    Our design focuses on the essential: functionality is paramount. Clear lines, simple geometry, and a design inspired by nature enhance the user experience rather than detracting from it. By creating minimalist solutions that take up little space and use sustainable materials, we are doing our bit to save our ecosystem. With its organic design, Hot Stone is not only visually appealing; its tactile qualities also make it a pleasure to hold.

    We are coming to KICKSTARTER!

    You are a fan of Red Radish and you want to get your very own as soon as possible? Then show some love and support us on KICKSTARTER.

    With people like you we can further improve not only our company and vision, but also everyday life situations with products that offer solutions to overcome obstacles and challenges.

    You want to get to know us and the product better. Just follow the link to the campaign. Thank you!