Casio Ring Watch and Oura in one device: Rogbid Fusion is a smart ring and mini smartwatch

Rogbid puts an OLED display in its smart ring (Image source: Rogbid)

A smart ring, a ring watch, and a smartwatch – the Rogbid Fusion is supposed to combine three devices in one. The wearable can be used like a smart ring with adjustable sizing or as a smartwatch, and is intended to collect a wide range of health data.

Hannes Brecher (translated by Enrico Frahn), Published 01/29/2026 🇩🇪

While the Casio Ring Watch and smart rings like the Oura Ring 4 (from $349 on Amazon) can collect extensive health data, the Rogbid Fusion combines both form factors and uses an unusual design that looks more like a smartwatch than a ring.

Specifically, the Rogbid Fusion is equipped with an adjustable Milanese band, meaning the ring is designed to fit any finger. The front sports 0.49-inch OLED display that can show the time and date as well as the step counter and heart rate. The back is transparent and houses the heart rate and SpO2 sensors. In combination with an accelerometer, the Rogbid Fusion is said to support over 100 sport modes as well as sleep and cycle tracking.

The Milanese band in ring form can be swapped for a wrist strap so that Rogbid Fusion can be worn on the wrist as a tiny smartwatch. The ring is water resistant up to 5 ATM and can therefore also be used while swimming. According to Rogbid, a single charge can last up to five days, and charging from 0 to 100 percent takes one hour.

Price and availability

The Rogbid Fusion 2-in-1 smart ring is available now at the manufacturer’s online shop for $49.99. Rogbid also ships to Europe, but the price does not include additional import or shipping fees.

Source(s)

Rogbid

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Editor of the original article: Hannes Brecher - Senior Tech Writer - 19783 articles published on Notebookcheck since 2018

Since 2009 I have written for different publications with a focus on consumer electronics. I joined the Notebookcheck news team in 2018 and have combined my many years of experience with laptops and smartphones with my lifelong passion for technology to create informative content for our readers about new developments in this sphere. In addition, my design background as an art director at an ad agency has allowed me to have deeper insights into the peculiarities of this industry.

contact me via: @HannesBrecher, LinkedIn, Xing

Translator: Enrico Frahn - Managing Editor Accessory Reviews, Tech Writer - 6217 articles published on Notebookcheck since 2021

My fascination for technology goes back a long way to the Pentium II era. Modding, overclocking and treasuring computer hardware has since become an integral part of my life. As a student, I further developed a keen interest in mobile technologies that can make the stressful college life so much easier. After I fell in love with the creation of digital content while working in a marketing position, I now scour the web to bring you the most exciting topics in the world of tech. Outside the office, I’m particularly passionate about motorsports and mountain biking.

contact me via: LinkedIn

> Expert Reviews and News on Laptops, Smartphones and Tech Innovations > News > News Archive > Newsarchive 2026 01 > Casio Ring Watch and Oura in one device: Rogbid Fusion is a smart ring and mini smartwatch

Hannes Brecher, 2026-01-29 (Update: 2026-01-29)

Price and availability

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