Accessing health and lifestyle data 24 hours a day, 365 days a year requires a device that operates without downtimes. Every time you take out your wearable devices to charge them, whether overnight or throughout the day, you miss out on valuable data. 

MOTHER Bracelet solves this issue completely.

Powered by your body heat and solar energy, you can track your health and lifestyle metrics without taking MOTHER Bracelet off your wrist for even a second.

There is a better way of monitoring your health and physical activity.

Too many devices to charge? MOTHER Bracelet won’t be another item in your arsenal of devices that need charging cords. 

Eliminate charging downtimes and monitor your health without interruptions – whether you’re awake or asleep, on the go or resting. 

MOTHER Bracelet is powered by harnessing a hybrid power generation (body heat + solar power), essentially giving your device endless energy.

Health management and activity monitoring needs to be holistic and uninterrupted. With MOTHER Bracelet, you can get 24 hours of data about your essential health metrics with no disruptions.

Track and monitor:

• The number of steps
• Amount and quality of sleep
• Heart rate
• Body surface temperature
• Calories consumed

Learn more about your lifestyle habits and improve your health.

With our unique proprietary algorithm, developed in cooperation with Japan’s leading doctors, MOTHER Bracelet will track your sleep and assign you a sleep score based on 5 unique metrics after each morning’s sync.

The accuracy of sleep measurement is determined by analyzing the data on body posture and movements gathered through a 3-axis acceleration sensor. 

MOTHER Bracelet has been tested and found to measure sleep with more than 95% accuracy.

To monitor health data without interruptions, your wearable device has to be comfortable to wear all day.

MOTHER Bracelet is 164 feet (50m) water-resistant and lightweight, weighing only 0.066lb (30g). Coupled with its sleek design, we built it to be incredibly comfortable and unnoticeable. 

Capture every health metric without even a slight discomfort.

Health is an essential precondition for being able to spend precious time with your loved ones and lead a happy life.

Two people rather than one, three people rather than two. We have prepared MOTHER Bracelets in a pair of colors for you to use with your loved ones. Choose the best combination from the sports type (White / Black ) or the casual type (Champagne Gold / Metallic Bronze).

The MOTHER Bracelet, developed in cooperation with Matrix Industries, utilizes a technology called “temperature difference power generation” that leverages the Seebeck effect. 

This technology generates electricity and powers the device by utilizing the temperature difference between the outside air and the surface of the body. 

As a result, there is no need to remove the bracelet for charging. This technology has been researched and developed for over 200 years since it was discovered by Estonian physicist Thomas Seebeck in 1821.

Now MOTHER Bracelet finally puts it into practical use.

1. Place MOTHER on the starter
2. Pair with the application
3. Wear MOTHER all day and night
4. Synchronize your bracelet twice a day

MOTHER Bracelet is not another smart watch. Our main goal is to help you improve your health and lifestyle by providing you with accurate, uninterrupted data on your activity. 

For those reasons, MOTHER does not show the time or sync with the notifications of your smartphone.

Non-stop health tracking is necessary to evaluate everything from your overall physical condition to the side effects of medication. However, if the tracking device needs to be removed for charging, there will be a gap in the data, and it will be difficult to determine what happened during that time. 

The ability to monitor your health round-the-clock, 365 days a year is invaluable, and the MOTHER Bracelet tackles this issue.

Take your MOTHER everywhere without a worry. Wash the dishes, take a bath, go to the pool, or more. MOTHER Bracelet is 164 feet (50m) water-resistant and weighs only 0.066lb for maximum comfort.

The band is made of silicon rubber, which is easy on the skin and is designed to be worn 24 hours a day. It’s also water-repellent and easy to wipe clean.

MEDIROM has been in the relaxation industry for over 20 years. We understand how important it is to have a healthy mind and body in order to have a fulfilling life. 

We became the No. 1 relaxation studio in Tokyo and the first direct listing on Nasdaq from Japan in 20 years. Our team has successfully obtained proof of concept for MOTHER Bracelet from the local Japanese market with an astounding support of 1,292 people.

Jointly developed with Matrix Industries, MOTHER Bracelet intends to continue this legacy.

MOTHER Bracelet comes in 2 styles and 4 colors in total. Choose the one that matches your taste:

Sports style:
Black (Silicone band)
White (Silicone band)

Casual style:
Champagne gold (Velcro band)
Bronze (Velcro band)

• Free shipping for backers from Japan. 
• $15 shipping fee for the rest of the world.
• Guaranteed shipping – December 2023.

The MOTHER Bracelet comes with beautiful branded packaging that includes:

• The bracelet
• Starter charging cable
• User manual

At MEDIROM we believe that the most crucial aspect of leading a fulfilling and active life is to have a healthy mind and body.

MEDIROM has been involved in B2C healthcare-related businesses in Japan for over 20 years, including operating relaxation studios such as Re.Ra.Ku and developing the healthcare app Lav. 

With the development of the MOTHER Bracelet, the focus has been on creating a device that users can wear as a fashion accessory while still serving as an activity tracker.

We are incredibly lucky to have such an amazing team of collaborators who helped bring MOTHER Bracelet to life.

What health metrics does MOTHER Bracelet measure?

• Step count
• Heart rate
• Calorie consumption
• Sleep
• Body surface temperature

How does body thermal charging work?

The mechanism of thermal power generation is based on a phenomenon called the Seebeck effect, which was discovered in 1821. The Seebeck effect is a phenomenon in which a weak electric current flows where there is a temperature difference.

For example, if the body surface temperature (32°C) – room temperature (22°C), a temperature difference of 10°C exists. The current is generated from this temperature difference and stored.

Can it run out of battery?
It’s possible, but very unlikely. If the amount of electricity consumed is greater than the amount of electricity generated, the battery may run out.

For example, if you use the activity mode on high or repeatedly sync it with the app, it will consume a lot of power. Alternatively, the battery may be low if the environmental temperature is very close to your body temperature—or you spend little time in the sun. If the battery dies, simply place MOTHER Bracelet on the included starter, and it will fully charge in a couple of hours.

Where is the solar panel located on the bracelet?
Solar panels are mounted on the surface of the main unit to generate power even in environments with low temperature difference power distribution. Power generation is supplied from the Pin visible on the edge of the surface of the main unit.

How accurate is the data provided by MOTHER Bracelet?
MOTHER Bracelet uses a 3-axis acceleration sensor to measure sleep with more than 95% accuracy. The accuracy of the remaining metrics is very high based on industry standards, comparable to similar wearable devices.