Issin Launches Official Site Sale for Amazon Prime Day 2026 | First-Year Membership Reduced to ¥1,000

Issin Inc. (Headquarters: Bunkyo-ku, Tokyo; CEO: Tao Cheng; pronunciation: Isshin), a healthcare startup originating from the University of Tokyo, will launch a sale on its healthcare device 'Smart Bath Mat'—a device that measures body composition simply by stepping on it after a bath—in conjunction with Amazon Prime Day 2026 in July 2026.

On Amazon, the Smart Bath Mat will be offered at a 10% discount (from ¥19,800 to ¥17,820) during both the pre-sale (July 7–9) and main sale (July 10–13).

On the official issin website (July 5, 6:00 PM to July 13), customers who purchase the Smart Bath Mat and simultaneously sign up for the annual membership (normally ¥6,000/year) will receive the first year for just ¥1,000.

Additionally, purchasers of the ring-type wearable device 'Smart Recovery Ring' will receive a 3-month free trial of the Wellness Plan Sleep Program (normally ¥3,000/month).

Sale Overview

◾️ Amazon Prime Day

Period

Pre-sale: July 7–9

Main Sale: July 10–13

Sale Details

Smart Bath Mat Body Composition Model (2026)

¥19,800 → ¥17,820 (10% off)

Purchase Page

https://amzn.to/4bgc4HJ

◾️ Issin Official Website

Period

July 5 (Sun) 6:00 PM – July 13

Sale Details

• Smart Bath Mat Body Composition Model (2026)

Purchase the device and sign up for the annual membership (¥6,000/year) to get the first year of membership for ¥1,000

• Smart Recovery Ring

Purchase the device to receive a 3-month free trial of the Wellness Plan Sleep Program (normally ¥3,000/month)

Purchase Pages

Smart Bath Mat: https://issin.cc/pages/smart-bath-mat

Smart Recovery Ring: https://issin.cc/pages/smart-recovery-ring

Smart Bath Mat Product Overview

The 'Smart Bath Mat' is a healthcare product that integrates a body composition scale with a bath mat, seamlessly incorporating health management into daily routines.

Simply step on it after a bath to measure 15 body composition metrics—including weight, BMI, muscle mass, and body fat percentage—and the data is automatically recorded in the dedicated app. With a user measurement continuation rate exceeding 90%, it enables users to unconsciously develop healthy habits.

The bath mat portion is replaceable, available in a wide range of colors, and features special designs such as the Shingo Murakami edition and Pokémon-themed models, allowing users to choose based on mood or preference.

The dedicated app has been continuously updated to offer numerous features, including nutritional analysis of meals by the personal healthcare AI 'Welly,' future weight change predictions, weekly 'Welly's Discoveries,' weight management modes tailored to individual goals and life stages, and privacy-conscious family data sharing. These features address diverse health needs such as children’s growth tracking, diet motivation, and frailty prevention in the elderly.

• Product Name: Smart Bath Mat Body Composition Model (2026)

• Price: From ¥19,800 (tax and shipping included)

• Key Features: Body composition measurement (15 items including weight, BMI, body fat percentage, muscle mass, and internal age), personal healthcare AI, nutritional analysis, future weight prediction, Welly's Discoveries, weight management modes, weight auto-care (available with membership)

• Official Website: https://issin.cc/pages/smart-bath-mat

Smart Bath Mat Membership Overview

By joining the 'Smart Bath Mat Membership (annual payment),' users can enjoy the following benefits to enhance their Smart Bath Mat experience. Cancellation is possible at any time.

[Benefit 1] Access to additional features such as Weight Auto-Care

• AI monitors weight changes and supports stress-free 'weight stability'

• Helps maintain a state where weight can easily return even if it increases

[Benefit 2] One free coupon per year for replacement mats (worth ¥4,680–¥5,680)

• A cost-effective benefit to keep the mat clean and hygienic over time

[Benefit 3] One 30% off product coupon per year (worth ¥8,940)

• Use the 30% discount on either a 'Smart Bath Mat' for family members or the 'Smart Recovery Ring' for comprehensive care

About Weight Auto-Care

Weight Auto-Care is a new feature that uses AI to monitor users’ weight changes and support sustainable 'weight stability' without strain.

Weight naturally fluctuates daily due to various lifestyle factors. However, many people become emotionally affected by temporary changes.

With Weight Auto-Care, AI learns the user’s 'usual weight range' and 'past fluctuation patterns' to determine whether a current change is temporary or requires attention, providing timely alerts. The AI may analyze, for example, that 'based on past patterns, it is highly likely to naturally return,' allowing users to live each day with peace of mind without emotional reactions to weight changes.

Like a car’s eco-meter, simply viewing the data helps users naturally develop lifestyle rhythms that promote stable weight. Issin aims not for temporary weight loss, but for a new form of health: 'weight stability'—a state where weight can easily return even after increasing.

Smart Recovery Ring Product Overview

The 'Smart Recovery Ring' is a ring-type wearable device that measures 'sleep,' 'stress,' and 'activity levels' upon wearing, with detailed data viewable on the dedicated app. It also integrates and analyzes data to visualize recovery levels each morning through the 'Recovery Score.'

With one of the lightest and thinnest designs among domestic brands, it offers minimal wearing sensation. Its daily water resistance ensures safe use during daily activities and showers. Additionally, it features a battery that provides approximately 7 days of continuous use after just 2 hours of charging, enabling stress-free usage even during busy schedules.

The dedicated app integrates the personal healthcare AI 'Welly' with user data, offering a gamified health management system that supports and accompanies users like a personal partner, encouraging enjoyable recovery habits from fatigue and discomfort.

• Product Name: Smart Recovery Ring

• Price: From ¥29,800 (tax and shipping included)

• Key Features: Recovery Score, sleep monitoring, stress monitoring, activity tracking, heart rate, blood oxygen level, heart rate variability, skin temperature, women’s health tracking, personal healthcare AI

• Official Website: https://issin.cc/pages/smart-recovery-ring

Wellness Plan Overview

The 'Wellness Plan' is a program where the personal healthcare AI 'Welly' closely follows daily user data and provides comprehensive support toward clear goals. Purpose-specific programs are available, such as weight loss and sleep improvement,