SOXAI RING X Tops US$635,200 in Kickstarter Pledges, Attracts 2,868 Backers in First 72 Hours

After passing US$400,000 from 2,000 backers on its first day, the Japanese smart ring brand makes its international debut with a 5.19 mm-wide ring offering up to 10 days of battery life.

YOKOHAMA, Japan, Oct. 5, 2026 /PRNewswire/ -- SOXAI Inc. today announced that its SOXAI RING X smart ring has surpassed US$635,200 in pledges from 2,868 backers within 72 hours of its Kickstarter launch, after attracting 2,000 backers and more than US$400,000 in its first 24 hours.

With more than 80,000 users, SOXAI is Japan's No. 1 smart ring brand by cumulative app downloads^[1]. SOXAI RING X marks the company's international debut, bringing together a width of just 5.19 mm—the narrowest in its category^[2]—and up to 10 days of battery life^[3].

Led by founder and CEO Dr. Tatsuhiko Watanabe, a former researcher at ETH Zurich, SOXAI develops its hardware, software and data analysis technologies together.

Proven Power Efficiency, Now in a Slimmer Ring

Low-power design is one of SOXAI's core engineering strengths. Its previous model, SOXAI RING 2, is already on the market and delivers up to 15 days of continuous use on a single charge—among the longest battery lives in the smart ring category.

SOXAI RING X builds on that experience, applying the company's expertise in power-efficient hardware and software to a more compact design. Users can review their sleep and activity in the companion app.

Original Engineering, Japanese Manufacturing

SOXAI RING X is an original product developed by SOXAI, not a rebranded white-label device.

SOXAI designs the ring's physical structure and functionality, developing its hardware, software and data analysis as a complete system. Manufacturing and testing are planned to take place in Japan, alongside ongoing data management and customer support.

A working prototype is already complete.

A Japanese Brand with a Focus on Sleep

Sleep has been central to SOXAI's product development. Japan's Ministry of Health, Labour and Welfare cites a 2021 survey in which Japan recorded the shortest average sleep duration among the 33 countries surveyed.

Joint research with the University of Tokyo and the University of Essex has examined sleep-stage estimation using heart rate and movement data from an earlier SOXAI RING model, with findings published in an academic journal. Studies of blood oxygen saturation (SpO₂) measurement at rest and heart rate estimation during physical activity have also been published in academic journals.

These findings relate to earlier products and related technologies; they are not test results for SOXAI RING X.

From Japan to the World

The Kickstarter campaign is SOXAI's first step toward bringing its experience in Japanese product development and manufacturing to an international audience. Backer demand will help guide the company's rollout, including which countries and regions to prioritize.

Kickstarter Campaign Details

Project: SOXAI RING X: World's Smallest, Up to 10-Day Battery
Campaign period: October 2, 2026, at 8:30 p.m. through October 10, 2026, at 11:59 p.m. Japan Standard Time (UTC+9).
Project page: SOXAI RING X on Kickstarter

[1] Based on cumulative downloads of smart ring apps in Japan from January 2022 through December 2024, across the App Store and Google Play combined. Source: SOXAI research.

[2] Based on a comparison of ring widths publicly reported by major manufacturers of smart rings with vital-sign sensing capabilities. Source: SOXAI research, as of September 2026.

[3] Up to 10 days is a theoretical battery-life estimate for US ring sizes 10–13. Actual battery life varies depending on ring size, usage, product age and other factors.

SOXAI RING X is not a medical device and is not intended to diagnose, treat or prevent any disease. Countries and regions eligible for shipping and use will be determined based on applicable wireless regulatory certifications and other requirements.

^[1] Based on cumulative downloads of smart ring apps in Japan from January 2022 through December 2024, across the App Store and Google Play combined. Source: SOXAI research.

^[2] Based on a comparison of ring widths publicly reported by major manufacturers of smart rings with vital-sign sensing capabilities. Source: SOXAI research, as of September 2026.

^[3] Up to 10 days is a theoretical battery-life estimate for US ring sizes 10–13. Actual battery life varies depending on ring size, usage, product age and other factors.

SOXAI RING X is not a medical device and is not intended to diagnose, treat or prevent any disease. Countries and regions eligible for shipping and use will be determined based on applicable wireless regulatory certifications and other requirements.

About SOXAI

SOXAI Inc. is a smart ring company based in Yokohama, Japan, led by founder and CEO Dr. Tatsuhiko Watanabe. With more than 80,000 users, SOXAI combines expertise in low-power hardware design, software and data analysis to help people better understand their sleep, activity and everyday well-being.

** This press release is distributed by PR Newswire through automated distribution system, for which the client assumes full responsibility. **

SOXAI RING X Tops US$635,200 in Kickstarter Pledges, Attracts 2,868 Backers in First 72 Hours

SOXAI RING X Tops US$635,200 in Kickstarter Pledges, Attracts 2,868 Backers in First 72 Hours

SOXAI RING X Tops US$635,200 in Kickstarter Pledges, Attracts 2,868 Backers in First 72 Hours

SOXAI RING X Tops US$635,200 in Kickstarter Pledges, Attracts 2,868 Backers in First 72 Hours

The new terminal will support the long-term development of tourism in Okinawa, strengthen regional connectivity, and enhance the guest experience.

NAHA, OKINAWA, Japan, Oct. 5, 2026 /PRNewswire/ -- Naha Port Authority, Cruise Port Naha G.K., Royal Caribbean Group and MSC Cruises celebrated the groundbreaking of a new cruise terminal at Naha Port, marking a significant milestone in the continued growth of cruising in Japan and across the East Asia region.

Cruise Port Naha G.K. is a joint venture between CTL Maritime and RCL Cruises Ltd., representing the respective interests of MSC Cruises and Royal Caribbean Group. Under the Cruise Hub Formation Agreement concluded with the Naha Port Authority in August 2026, Cruise Port Naha G.K. will develop and operate the new terminal, with completion and the start of operations targeted for March 2028.

The new terminal will provide modern, purpose-built facilities designed to enhance the guest experience, improve operational efficiency, and support the long-term growth of cruise tourism in Okinawa.

As one of Japan's most strategically located ports, Naha offers year-round accessibility and serves as an ideal gateway for cruise itineraries throughout the region. Once completed, the new terminal will provide enhanced passenger facilities, strengthening the port's ability to accommodate some of the most advanced cruise ships in the world, thereby supporting increased passenger capacity and growing demand for cruise vacations in Asia.   

"For Royal Caribbean Group, Japan is one of the most important cruise markets in Asia - not only as a destination, but as a long-term partner in our global business. We do not simply bring guests here, we also invest here and with Naha Okinawa, we are investing in infrastructure that will benefit the local community for years to come," said Jason Liberty, chairman and CEO of Royal Caribbean Group. "The future of cruising in Japan is about shared ambition, collaboration, and responsible innovation, and we are honored to be a part of it."

"Okinawa is uniquely positioned at the crossroads of some of Asia's most exciting cruise destinations, and we see real potential for its future," said Pierfrancesco Vago, Executive Chairman, MSC Group, Cruises Division. "This project forms part of our long-term vision to expand our presence in the region and create new opportunities for guests of MSC Cruises and Explora Journeys to enjoy Asia year-round. As we continue to develop our itineraries and invest in infrastructure, we are making cruising more accessible for both international and Asian travellers while strengthening connections across the region. We are proud to partner with Royal Caribbean Group and the Naha Port Authority in bringing this vision to life, and I thank all those whose commitment, collaboration and shared ambition have made today's milestone possible. Together, we are investing not only in a port, but in the future growth of cruise tourism in Okinawa and across Asia."

The project follows Naha Port's designation by Japan's Ministry of Land, Infrastructure, Transport and Tourism as an International Cruise Ship Hub Formation Port in 2019 and represents an important public-private collaboration to support the long-term development of tourism in Okinawa.

Today's groundbreaking included a traditional Japanese ceremony at the future terminal site, marking the formal start of construction and bringing together several esteemed public officials for the event, including Okinawa Governor Genta Koja and representatives from the Cabinet Office of Japan, alongside representatives from Naha Port Authority, Cruise Port Naha G.K., MSC Cruises and Royal Caribbean Group.

About Royal Caribbean Group
Royal Caribbean Group is a leading global vacation company spanning cruise, one-of-a-kind destinations, and land-based vacation experiences. The company operates 71 ships sailing to more than 1,000 destinations across all seven continents through its three wholly owned brands - Royal Caribbean, Celebrity Cruises, and Silversea - and a 50% joint venture interest in TUI Cruises, which operates the Mein Schiff and Hapag-Lloyd brands.

The Group is expanding its portfolio of private destinations through its Perfect Day and Royal Beach Club collections, and the company will enter river cruising in 2027 with Celebrity River Cruises. Powered by innovative brands, advanced technology, and an industry-leading loyalty program, the company has built a connected vacation ecosystem, turning the vacation of a lifetime into a lifetime of vacations. 

Named to the Fortune World's Most Admired Companies 2026 list and to Forbes' 2026 Best American Companies lists, Royal Caribbean Group is guided by its mission to deliver the best vacations responsibly. For more information, visit royalcaribbeangroup.com.

About MSC Cruises
Headquartered in Geneva, Switzerland, the privately-owned MSC Cruises is the world's third largest cruise line and the market leader in Europe with a strong and growing presence in North America. A global cruise brand with 23 modern ships offering cruises across five continents, guests can visit more than 100 countries worldwide with more than 300 destinations, making unforgettable memories and enjoying the finest hospitality. For more information visit MSC Cruises.

** This press release is distributed by PR Newswire through automated distribution system, for which the client assumes full responsibility. **

NAHA PORT AUTHORITY, CRUISE PORT NAHA G.K., MSC CRUISES AND ROYAL CARIBBEAN GROUP BEGIN CONSTRUCTION OF NEW CRUISE TERMINAL AT NAHA PORT, OKINAWA