About the Smart Recovery Ring / INFOBAR Collaboration Model
The Smart Recovery Ring is a finger-worn wearable device that measures “sleep,” “stress,” and “activity level,” allowing users to view detailed data via a dedicated app. The collaboration model incorporates the distinctive “NISHIKIGOI” and “ICHIMATSU” colors, which symbolize the original “INFOBAR” (launched in 2003).
The “NISHIKIGOI” model utilizes an aluminum alloy, while the “ICHIMATSU” model features stainless steel. The design team focused on achieving the high CMF (Color, Material, Finish) quality expected of the INFOBAR name. The design supervision for this collaboration model was provided by Tetsuya Sunahara, producer of the KDDI au Design project.
This marks the second INFOBAR series collaboration for issin products, following the “Smart Bath Mat,” a body weight measuring bath mat.
Product Overview
| Feature | Details |
|---|---|
| Product Name/Color | Smart Recovery Ring／INFOBAR NISHIKIGOI Smart Recovery Ring／INFOBAR ICHIMATSU |
| Sales Channels | KDDI direct stores, au Style, au shops, UQ spots nationwide (Please contact each store for availability) |
| Purchase Page | au Online Shop |
| Sales Price | 35,750 JPY (tax and shipping included) (Prices at other retailers may vary; please inquire directly) |
| Key Functions | Recovery Score, Sleep Monitor, Stress Monitor, Activity Monitor, Heart Rate, Blood Oxygen Saturation, Heart Rate Variability, Skin Temperature, Women’s Health Management, Personal Healthcare AI |
| Included Items | Charger, Charging Cable (Type-C) |
| Weight | Approx. 3g |
| Dimensions | Width 8mm, Thickness 2.3mm |
| Size Range | US 6 to 13 |
| Materials | Outer: Aluminum alloy (NISHIKIGOI) / Stainless steel (ICHIMATSU) Inner: Synthetic resin |
| Bluetooth Standard | Bluetooth 5.1 |
| Waterproof Rating | IP68 / 5ATM |
| Operating Temperature | -5℃ to 45℃ |
| Battery | Rechargeable polymer lithium battery (non-replaceable) |
| Charging Time | Approx. 2 hours for full charge |
| Battery Life | Up to 7 days (May vary depending on usage environment) |
About “INFOBAR”
INFOBAR was launched in 2003 as the first model of the “au Design project,” which aimed to innovate mobile phone design, making a significant impact on the mobile design landscape. One of INFOBAR’s defining characteristics is its unique color designs, such as NISHIKIGOI and ICHIMATSU. Its distinctiveness also led to its frequent depiction as a mobile phone used by characters in anime and manga, influencing a wide range of cultures. Over approximately 20 years, as mobile phones evolved into smartphones, a total of seven models were released. The representative color, NISHIKIGOI, was adopted in all models, securing high support throughout the series. The product design was handled by product designer Naoto Fukasawa, and its design has received high international acclaim. It is housed in institutions such as the Museum of Modern Art (MoMA) in New York, the Indianapolis Museum of Art (USA), and the Victoria and Albert Museum (UK, London). In 2023, to commemorate the 20th anniversary of the original INFOBAR’s launch, October 31st, its release date, was designated as “INFOBAR Day.”
About “Smart Recovery Ring”
The Smart Recovery Ring is a finger-worn wearable device that measures “sleep,” “stress,” and “activity level,” allowing users to view detailed data via a dedicated app. It integrates and analyzes data to visualize recovery levels through a “Recovery Score” provided each morning.
With a thin and light design, among the lightest domestic brands, it offers minimal wearing sensation. Its life waterproof specification allows for worry-free use in daily life and during showers. Additionally, it features a battery that provides approximately 7 days of continuous use on a 2-hour charge, ensuring stress-free usage even in busy schedules.
The dedicated app includes “Welly,” a personal healthcare AI that links with user data, acting like a supportive partner. It incorporates a gamified health management system, encouraging recovery habits from fatigue and poor health in an enjoyable way.
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Product Name: Smart Recovery Ring
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Sales Price: From 29,800 JPY (tax and shipping included)
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Key Functions: Recovery Score, Sleep Monitor, Stress Monitor, Activity Monitor, Heart Rate, Blood Oxygen Saturation, Heart Rate Variability, Skin Temperature, Women’s Health Management, Personal Healthcare AI
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Official Website: Smart Recovery Ring
About issin Inc.
issin Inc. is a healthcare startup based in Bunkyo-ku, Tokyo, founded on April 5, 2021. The company, led by Representative Director Tao Cheng, focuses on developing and providing healthcare devices and services integrated into daily life. Their offerings include the smartphone app “Welly” for lifestyle improvement, the “Smart Bath Mat” for unconscious weight management, the “Smart Recovery Ring” for visualizing sleep quality, and corporate services like “Smart 5min” for exercise habits and “Smart Daily” for lifestyle improvement.
Company URL: issin Inc.
Representative Profile: Tao Cheng, issin Inc.
Born in Henan Province, China, in 1982, Tao Cheng graduated from Tokyo Institute of Technology and is a serial entrepreneur. While pursuing his master’s degree at the University of Tokyo, he founded popIn, a University of Tokyo startup, which merged with Baidu in 2015. He developed the world’s first 3-in-1 projector integrated with lighting, “popIn Aladdin,” and the hit game “Suika Game.”
In 2021, he founded issin Inc., releasing the “Smart Bath Mat,” the first bath mat in Japan capable of measuring weight simply by stepping on it after a bath. In 2025, he released the “Smart Recovery Ring,” a finger-worn device that visualizes sleep quality, pursuing healthcare experiences integrated into daily life.
In November 2025, he published his first book, “Ideas as Tools” (Nikkei BP).
Book Information
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Title: Ideas as Tools
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Author: Tao Cheng
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Release Date: November 21, 2025 (Friday)
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Price: 1,760 JPY (tax included)
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Publisher: Nikkei BP
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Links:
