SOXAI

SOXAI is a Japanese health-technology brand best known for the SOXAI RING, a titanium smart ring that tracks sleep and vital signs. The company behind the brand, SOXAI Inc. (株式会社SOXAI), is headquartered in Yokohama, Kanagawa, with a research and development base at the University of Tokyo's Graduate School of Education in Bunkyo, Tokyo. Its stated mission is to improve quality of life worldwide through sensing technology, and its vision is to make healthcare part of everyday lifestyle. The SOXAI name is derived from the Japanese word 息災 (sokusai), meaning good health, reflecting a desire to share Japanese culture globally. The flagship product, SOXAI RING 2, is marketed as one of the world's thinnest smart rings at 6.7 mm wide and 2.7 mm thick, weighing 2.1–2.7 g. It uses a proprietary optical sensor system called Deep Sensing™, an AI-equipped 3D accelerometer, and a skin-temperature sensor. The ring is made of aerospace-grade titanium alloy (Ti-6Al-4V) on the outside with a synthetic resin interior, and it offers up to 15 days of battery life on sizes 20–26, 100 m water resistance, and BLE 5.0 connectivity. It is sold in ten sizes and five colors, with no subscription fee required. SOXAI emphasizes domestic manufacturing and data management in Japan, and states that it receives technical support from Sharp Corporation for mass production and quality control. SOXAI positions the ring as an academically grounded sleep-health device, supervised by Shintaro Chiba, vice-chair of the Japanese Society of Sleep Research. A notable feature is a world-first heatstroke alert that combines heart rate, skin temperature, and the government's nationwide WBGT heat index to push notifications when heatstroke risk is high. The brand claims the top domestic share in Japan for smart-ring-related app downloads for the period January 2022 to December 2024, based on its own research. The company is led by founder and CEO Dr. Tatsuhiko Watanabe, with Atsuki Mitsuyori as CFO and Yu Sekine as COO.

SOXAI Inc. was founded by Dr. Tatsuhiko Watanabe, a University of Tokyo-trained engineer who previously worked as an ETH fellow at the Swiss Federal Institute of Technology's electromagnetic fields laboratory and as an R&D project manager at a global ICT company. The company's name comes from the Japanese word 息災 (sokusai), meaning good health, and reflects a desire to share Japanese culture with the world. The corporate mission is to contribute to improving quality of life globally through technology, with a vision of making healthcare part of everyday lifestyle. The company is headquartered in Yokohama, Kanagawa, and maintains a research and development base at the University of Tokyo's Graduate School of Education in Bunkyo, Tokyo. Its business includes the development, manufacturing, sales, and intellectual property management of healthcare, IoT, and wearable electronic components and systems, as well as mobile and web applications and data analysis. SOXAI is registered as a telecommunications carrier and holds ISMS and PrivacyMark certifications. The brand's flagship product, the SOXAI RING, is a smart ring designed for sleep and wellness tracking. The second-generation SOXAI RING 2 is marketed as one of the world's thinnest smart rings, measuring 6.7 mm wide and 2.7 mm thick, and offers up to 15 days of battery life on larger sizes. It uses a proprietary optical sensor called Deep Sensing™, an AI-equipped 3D accelerometer, and a skin-temperature sensor. The ring is made of titanium alloy and is manufactured in Japan with technical support from Sharp Corporation. SOXAI states that it handles manufacturing through to sales and data management domestically. SOXAI has emphasized academic credibility, with the ring supervised by Shintaro Chiba, vice-chair of the Japanese Society of Sleep Research. The brand also introduced a heatstroke alert feature that combines heart rate, skin temperature, and the government's WBGT heat index, which it describes as a world first for a smart ring. The company claims the top domestic share in Japan for smart-ring-related app downloads from January 2022 to December 2024, based on its own research. The company is led by founder and CEO Dr. Tatsuhiko Watanabe, with Atsuki Mitsuyori as CFO and Yu Sekine as COO.

• SOXAI Inc. founded by Dr. Tatsuhiko Watanabe

• SOXAI RING 2 launched with Deep Sensing™ sensor and up to 15-day battery life

• Heatstroke alert feature introduced, described as a world first for a smart ring

• Claimed top domestic share in Japan for smart-ring-related app downloads (Jan 2022–Dec 2024)

Premium, academically supervised Japanese-made smart ring for sleep and wellness, with no subscription and domestic data management.

• SOXAI RING 2

  Titanium smart ring with Deep Sensing™ optical sensor, AI 3D accelerometer, skin temperature sensor, up to 15-day battery, 100m water resistance, 10 sizes, 5 colors.

1. 1SOXAI RING（ソクサイリング）｜国内シェアNo1日本製スマートリング – SOXAIオンラインストアsoxai.co.jp
2. 2About Us – SOXAIオンラインストアsoxai.co.jp
3. 3SOXAI RING 2 – SOXAIオンラインストアsoxai.co.jp
4. 4SOXAI - Wikidatawikidata.org