SAWATCH-3 / sauna device-3 Now on Sale!

Feb 17, 2026

Make the sauna experience truly your own.

Understand how the sauna affects you,not just by sensation, but also through data,. While enjoying the profound depth of the sauna,you can utilize it more proactively for daily conditioning and boostingyour body.

The newly developed SAWATCH-3 is not only for saunas, but also tracksdaily Activity, stress levels, and sleep extensively, allowing youto look back on how sauna sessions affect your daily life.

SAWATCH-3 transforms the sauna from just a "good feeling" into a "fully mastered experience".

Introducing the New Model

youtu.be/5M-EPqDNayg

New Feature Introduction

Evolved Sauna Mode

To enjoy the sauna experience deeper and safer,we have fully evolved the Sauna Mode.

In addition to the conventional heart rate, it now displays the "heart rate slope". This allows you to understand changes in your body more than ever before.

Furthermore, it supports the entire series of sauna experiences, not only inside the sauna room but also during cold baths and rests.

You can now set individual notifications based on configured time or heart rate, allowing you to create your own sauna rhythm with notifications tailored to your Sauna Style.

Multiple patterns of Sauna Mode faces are available.

You can control what information you need yourself.Light Mode and Dark Mode can also be selected, allowing you to focus more on your sauna.

New Mode: "Meditation Sauna Mode"

Sometimes you want to step away from the numbers and simply face your own senses. For those sauna moments, we have newly equipped the "Meditation Sauna Mode".

While designed to keep you quietly focused on the sauna without displaying data on the screen, it still internally measures data just as reliably as the regular sauna mode.

By separating "time to feel" and "time to reflect," we offer a new option for how you approach your sauna experience.

Measure Daily Life too

sauna device 3 is not just for saunas.

It records a wide range of metrics, including daily activity, stress levels, and sleep, allowing you to reflect on how saunas impact your daily life.

Furthermore, basic features designed for everyday use, such as timer and alarm functions, have also been enhanced.

It has evolved into a watch that you can naturally keep wearing, whether it's a sauna day or not.

Selectable Watch Faces

You can now freely customize the watch face on the Home screen.

You can choose the display design to suit your usage and mood.

In the future, we also plan to release limited-edition watch faces tailored to events and campaigns.

We will expand experiences that allow you to continue enjoying and using it not only during sauna time but also in your daily life.

Hardware Enhancements

Two Color Variations

Matte Black and Champagne Gold variations are available.

Designed for everyday wear as well as sauna use, we have selected colors and finishes that look great on both men and women.

💬 The image is a CG mockup. The actual texture and colors may differ slightly from the final product.

Sensor Upgrades

Equipped with a new, cutting-edge sensor, it measures Vital Data such as heart rate with higher precision. In addition to tracking changes during sauna sessions,the accuracy of data during daily life and sleep is also improved.

This makes it possible to capture more accurately how sauna sessions affect your physical condition.

The sleep tracking function is also enhanced, providing continuous support from the end of one day to the start of the next.

High-Resolution AMOLED Display

Adopted a high-resolution AMOLED display with excellent visibility.

You can clearly check the necessary information even under the bright lights of a sauna room or in outdoor environments in daily life.

Inside the sauna room,it is designed to be highly legible even with lower display brightness, allowing you to control the screen to prevent it from shining unnecessarily in dark sauna rooms.

We have designed a screen that combines visual beauty and ease of viewing, ensuring a pleasant experience every time you use it.

Enhanced Sauna Resistance

Based on the insights gained from our sauna device development to date,we have adopted custom-designed hardware. Engineered specifically for high-temperature and high-humidity sauna environments,its heat resistance has been further enhanced.

During development, destructive testing was conducted under ultra-high temperatures exceeding the heat-resistance specs to ensure absolute safety.

To allow you to use it during daily life and sauna sessions with peace of mind,the warranty period has been extended to one year. We designed it to be your most reliable companion.

Specifications, etc.

Main body size: Height 4.85 cm × Width 2.57 cm × Thickness 1.15 cm
Belt width: Approx. 1.6 cm
Compatible wrist circumference: 16.6 cm to 23.2 cm
Weight: Approx. 28 g
Colors: 2 colors (Black, Champagne Gold)
Materials: Case | Fiber-reinforced polymer, Belt | Silicone, Stainless steel (buckle), Display | Mineral glass
Display size: 1.72-inch
Display resolution: 212 x 520 px
Charging method: Dedicated magnetic cradle (USB-A)
Estimated charging time: Approx. 2 hours
Estimated operating time: Approx. 5 to 7 days *Depending on operating conditions
Operating temperature (internal design standard): -10°C to 100°C
*This value represents the internal design standard of the product and does not indicate usable ambient temperature or storage temperature.
*This product is designed for wearing and use in a sauna environment. Use in other high-temperature environments is not intended.
*Please check the 'Usage conditions (guidelines)' for actual operating conditions.
Water resistance rating: IP68, 5ATM
Battery: Equipped with a high-temperature-compatible battery
Technical conformity certification: Acquired (222-260394)

Included items

sauna device main body
Dedicated band (This band is exclusively for sauna device 3)
Dedicated charging cradle (Compatible with SHOWDOWN 1)
User Manual (Quick Guide)

Usage Conditions & Warranty Period

Usage conditions (guidelines):

In the sauna room, please use the device worn on your wrist as a guideline when the indoor temperature display is 100°C or lower. Also, please limit each session to within 20 minutes as a guideline.
The actual temperature will vary depending on the installation position of the thermometer, your seating position, etc.
As the internal temperature may rise if this product is removed and left unattended in the sauna, please do not remove it and leave it unattended or forget it.
If any abnormal heating, unusual odor, deformation, etc., is observed, stop using the product immediately.

Warranty Period:

From the day the sauna device is connected to the "Sanokuni" app 12 months

* We do not guarantee that this device will always operate without disruption or be error-free. Please note that damages caused by failure to follow the instructions regarding the use of this device are not covered by the warranty. Damage resulting from normal wear and tear, force majeure, abuse, or intentional or negligent acts by the user is not covered by the warranty.