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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)
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.

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.

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> 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)