Get 15% OFF K Ring with code: TFL15
As seen on
Knock in. Knock out.
You’ll be used to the touch in, touch out action when using your Oyster or contactless card on the Transport for London network, so you’ll get the hang of K Ring in no time.
Just make the Transmission Ready gesture with your hand and knock on the yellow card reader on entering and exiting a Tube station – travelling with K Ring really is as easy as it looks.
Fare capping with K Ring
If you use K Ring to pay as you go on the TfL network, and you make multiple journeys in a day or week, your fares will be capped. This means the amount that you pay is limited, and could be cheaper than buying a Travelcard. Fare capping allows you maximum flexibility throughout the day or week without worrying that you’ve spent more than you need to. Caps are applied automatically at the end of each day where appropriate. Learn more about the benefits of fare capping here.
Accepted across TfL
You can use K Ring to pay as you go on bus, Tube, tram, DLR, London Overground, TfL Rail, River Bus and most National Rail services in London
No delays at the barrier
K Ring is always on hand, so no more digging around at the barrier for your ticket, Oyster Card or the right contactless payment card
No more card clash
K Ring is always separate from your payment cards, so you’ll never accidentally use the wrong card to pay for your travel
K Ring is powered by Mastercard® which means you can also use it to pay anywhere in the world that displays the contactless payment symbol
Unlike smartphones and smartwatches, K Ring never needs charging, so you'll always be able to pay
K Ring works all by itself, so you don't need to pair it with a smartphone to make a payment
Engineered from zirconia ceramic, K Ring’s outer shell is hypoallergenic and almost as scratch-resistant as diamond
K Ring’s electronics are sealed with a waterproof hypoallergenic resin, and it's just as happy in the sea as it is in the shower
Features and benefits
- Make contactless payments up to £30 (UK)*
- 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, authorised by the FCA
*POS 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 the UK, you may be asked to enter a PIN.
Fees and charges
was £99.99 now £84.99 ‡
Transaction fee (UK POS)
Transaction fee (non-UK POS)†
Load via bank transfer
Load via credit card
Load via debit card
† We use Mastercard's foreign exchange rate for our currency conversions + a 3% Currency Conversion Fee (Bank Fee).
‡ After Promo Code added at checkout
Making a payment with K Ring couldn’t be easier. Just move your hand towards the contactless card reader and hold it there until you see the green light or hear the beep. Watch the video below to see just how easy it is.
Always looking good
Available in a range of sizes, K Ring is engineered from scratch resistant zirconia ceramic and comes in 14 colour combinations.
Which will you choose?
It was so easy!
Andrea, London, email
Getting used to clench fist - touch Oyster reader - open barrier - get on tube
Steve, London, Twitter
If I forget to wear my ring, my day gets a lot more inconvenient – especially on the Tube
Karen, London, Email
Used mine in Germany and the guy behind the counter made me show it to his co-workers
Raymond, Reading, Twitter
It worked perfectly. You’re not having it back it’s gorgeous!
Andrew, Hampshire, Twitter
No more searching the saddle bag at the coffee stop – I just pay with a fist bump!
Nigel, Hertfordshire, Email