Get 15% OFF K Ring with code: TFL15

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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

Accepted across TfL icon
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

Clock icon
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

Card clash icon
K Ring is always separate from your payment cards, so you’ll never accidentally use the wrong card to pay for your travel

Contactless payments

Contactless icon
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

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!

Features and benefits

  • Make contactless payments up to £45 (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

Purchase price

was £99.99 now £84.99 ‡

Monthly fee


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

Always easy

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

Engineered from scratch-resistant zirconia ceramic, K Ring is available in a wide range of sizes and colour combinations.
Which will you choose?

Get 15% OFF K Ring with code: TFL15

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Promo code expires at 23:59 on 29th February 2020