White Lunar Slim
How to find your size
- Decide which finger you want to wear your Rikki ring on.
- Make sure the chosen size will fit over your knuckles.
The typical women’s size is between 6 and 8, and men’s between 10 and 12.
A. With thread and ruler
- Take a thread or a paper strip and wrap it once around your finger.
- Mark where the ends meet.
- Measure from mark to mark with a ruler.
- Find the Rikki size that matches the measurement.
B. With a ring you already have
- Measure its inner diameter.
- Find the Rikki size in the table.
| cm | Rikki size | Spanish size |
|---|---|---|
| 5,4 | 5 | 9 |
| 5,7 | 6 | 12 |
| 6,0 | 7 | 15 |
| 6,3 | 8 | 17 |
| 6,6 | 9 | 20 |
| 6,9 | 10 | 22 |
| 7,2 | 11 | 25 |
| 7,5 | 12 | 27 |
| 7,8 | 13 | 30 |
| 8,1 | 14 | — |
| 8,3 | 15 | — |
Leave your wallet at home. With Rikki you pay anywhere in the world with just a tap, no battery and no phone. So light you won’t even notice it. Certified by Visa and Mastercard and PIN-protected. Local support 24/7.
- Ring sizer free with your order
- Free size exchange within 14 days
- Free standard shipping · Express shipping €5
- Performance warranty (3 years)
Why choose the Rikki payment ring?
No battery, no cables
Head out without wallet or phone. Your card is on your finger, and it never needs charging.
Waterproof to 50 metres
Sea, pool or rain without a second thought: you never need to take it off.
Block it instantly from the app
If you lose it, you block it right away from the Rikki app, without cancelling cards or calling the bank.
Ultralight and slim
You wear it like a normal ring, not like a bulky gadget.
Bank-certified chip
Certified by Visa and Mastercard: a real bank payment method, accepted at any contactless terminal.
Support and compatibility
Bank not on the direct list? Link it with the Curve Bridge card. Support in English and Spanish, 24/7.
“Rings that let you pay with a simple tap, anywhere in the world”— La Vanguardia
Pay with a tap. No wallet, no phone. Rikki is a contactless payment ring with a chip certified by Visa and Mastercard. Tap the terminal with your closed fist and pay, just like with your card.
Made to be worn every day. Made of medical-grade hypoallergenic zirconia ceramic (resistant to everyday scratches and knocks). It has no battery and never needs charging, and it’s waterproof to 50 m: you can leave it on in the shower, the pool or the sea.
If you lose it, your money stays protected. Rikki doesn’t store or transmit your real card data: every payment generates a token that expires once it’s done. And you can block it instantly from the app.
Easy from day one. At first it takes a moment to find the exact spot on the terminal. Once you get it, it becomes your everyday way to pay.
Tired of looking for your wallet at the beach, the gym or on your way to the metro? Choose your size and start paying with a tap.
Tech specs
From people who’ve already left their wallet at home
Frequently asked questions
Your payment, in a ring
How to find your size
- Decide which finger you want to wear your Rikki ring on.
- Make sure the chosen size will fit over your knuckles.
The typical women’s size is between 6 and 8, and men’s between 10 and 12.
A. With thread and ruler
- Take a thread or a paper strip and wrap it once around your finger.
- Mark where the ends meet.
- Measure from mark to mark with a ruler.
- Find the Rikki size that matches the measurement.
B. With a ring you already have
- Measure its inner diameter.
- Find the Rikki size in the table.
| cm | Rikki size | Spanish size |
|---|---|---|
| 5,4 | 5 | 9 |
| 5,7 | 6 | 12 |
| 6,0 | 7 | 15 |
| 6,3 | 8 | 17 |
| 6,6 | 9 | 20 |
| 6,9 | 10 | 22 |
| 7,2 | 11 | 25 |
| 7,5 | 12 | 27 |
| 7,8 | 13 | 30 |
| 8,1 | 14 | — |
| 8,3 | 15 | — |
