Stay informed with free SMS alerts
With K Ring, you can keep up to date with alerts sent to your mobile, displaying your balance and confirming when funds are loaded to your account.
Free to load, free to use
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
Always on hand
Carrying a wallet or purse isn’t always practical, so we made K Ring, the world's first contactless payment ring.
Now you can leave your wallets, purses, cash, coins and cards at home and still pay for stuff – anywhere that accepts Mastercard® contactless payments – no PIN, signature, bank account or smartphone required.
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?
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
K Ring is welcome anywhere that accepts Mastercard contactless payments, which is almost 6 million retail locations worldwide – just look out for the contactless payment symbol
You can’t make accidental payments with K Ring because it must be within 4cm of a contactless reader, with your hand in the correct position.
Powered by Mastercard, K Ring benefits from all of Mastercard’s security features – and for extra peace of mind, you can easily switch it off and on at any time.
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
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