The fintech’s Inter Ring and Inter Wristband allow customers to make payments using passive NFC technology, meaning the devices require no battery and are water-resistant.

The rings will be offered in gold, silver, rose, black and grey, while the adjustable wristbands will be available in black, orange and white. Both are activated through the Inter app.

Purchases made using the wearables are linked to the customer’s existing Inter credit card, sharing the same credit limit and payment date, with all transactions appearing on a single statement.

Inter said payments are protected through tokenisation and encryption, while customers can disable or remove a wearable through the app if it goes missing, FinExtra reports.

Rodrigo Gouveia, executive director of e-commerce and ecosystems at Inter, said the devices were designed to make everyday payments more efficient while providing customers with “peace of mind” over security.

The wearables will initially be offered to a limited number of Inter customers in the US, ahead of a wider rollout later this year.