Pre-launch offer: SAVE 40% when you pre-order now

Always with you

K Ring is the world's first contactless payment ring, powered by Mastercard®.

With K Ring, there's no need to handle cash or touch a PIN pad so you can leave your cards and phone safely in your pocket.

K Ring is free to load and free to use, and with the new contactless limit of €50, it's now even easier to safely pay in store – just look for the contactless payment symbol.

Pre-Order now

40% OFF!

Normal price €99.99 now €59.99 ‡


No chargingNo charging

Unlike smartphones and smartwatches, K Ring never needs charging, so you'll always be able to pay

No pairingNo pairing

K Ring works all by itself, so you don't need to pair it with a smartphone to make a payment

Scratch resistantScratch-resistant

Engineered from zirconia ceramic, K Ring’s outer shell is hypoallergenic and almost as scratch-resistant as diamond


K Ring is waterproof and won't be harmed by soap or alcohol-based hand sanitiser – so keep washing those hands!

Always looking good

K Ring is available in a wide range of sizes and editions. Pre-order now and we’ll send you a free ring sizing kit and unique code, giving you plenty of time to choose your edition and work out your ring size. On the launch date, you just need to visit the website and use your code to order your K Ring – no further payment required.

Pre-Order now

40% OFF!

Normal price €99.99 now €59.99 ‡

Features and benefits

  • Make contactless payments up to €50*
  • Accepted at over 40 million locations worldwide
  • Secure – turn K Ring on and off
  • Auto top-up facility
  • Link multiple K Rings to the same account
  • Manage your account easily online
  • Powered by Mastercard

*Once K Ring has been activated and linked to the K Wearables virtual prepaid Mastercard; customers must meet age, residency and identification checks when applying for the virtual prepaid Mastercard account. Point-of-sale transactions with K Ring are subject to a maximum amount in line with local contactless transaction limits, therefore this figure may be lower in some countries. For transactions over a certain amount outside Germany, you may be asked to enter a PIN.

Fees and charges

Purchase price

Normal price €99.99
now €59.99 ‡

Monthly fee


Transaction fee (in Germany)


Transaction fee (outside Germany)


Load via bank transfer


Load via credit card (Mastercard/Visa)


Load via debit card (Mastercard/Visa)


† We use Mastercard's foreign exchange rate for our currency conversions + a 3% Currency Conversion Fee (Bank Fee).

‡ Pre-orders only

It was so easy!

testimonials_icon_email.pngAndrea, London, email

Getting used to clench fist - touch Oyster reader - open barrier - get on tube

testimonials_icon_twitter.pngSteve, London, Twitter

If I forget to wear my ring, my day gets a lot more inconvenient – especially on the Tube

testimonials_icon_email.pngKaren, London, Email

Used mine in Germany and the guy behind the counter made me show it to his co-workers

testimonials_icon_twitter.pngRaymond, Reading, Twitter

It worked perfectly. You’re not having it back it’s gorgeous!

testimonials_icon_twitter.pngAndrew, Hampshire, Twitter

No more searching the saddle bag at the coffee stop – I just pay with a fist bump!

testimonials_icon_twitter.pngNigel, Hertfordshire, Email


Free to load, free to use

K Ring draws funds from a virtual prepaid Mastercard with Auto top-up capability, so you need never run out of funds. We don't charge you to load your K Ring via debit card or bank transfer – and we don't charge you when you use it to pay, either. Pre-order K Ring now and save 40%.

Launching 29/01/21

K Ring will be live in Germany on 29th January 2021, and from that date you’ll be able to use it to make contactless payments anywhere displaying the contactless payment symbol. Be one of the first in Germany to pay with the world’s first contactless payment ring – pre-order now!

Pre-launch offer: pre-order now and SAVE €40