Sanokuni FAQ - Frequently Asked Questions
ハードウェア
- Can I transfer the sauna device to another person?
- Yes. Please unpair the Bluetooth connection with your smartphone before transferring it. It can be used by connecting it to the recipient's smartphone. The warranty period is registered based on the date it was first used, so it will not change.
- Is it possible to purchase the sauna device Otona no Kagaku model standalone?
- There are no plans for standalone sales. Please purchase the new model, SHOWDOWN 1.
- It says it is sauna-compatible, but up to what temperature is it supported?
- Actual temperatures fluctuate depending on the thermometer placement, seating position, etc. Please check the Operating Conditions (Guidelines) for actual usage conditions. * This product is designed to be worn and used in a sauna environment. It is not intended for use in other high-temperature environments. * Leaving this product off inside a sauna may cause its internal temperature to rise, so please do not take it off and leave it behind or unattended. * We cannot respond to individual non-warranted scenarios such as "Is it okay if it is under 110°C for less than 10 minutes?" SAWATCH-3: Operating Conditions (Guidelines): - Use while worn on the arm inside the sauna room in an environment where the room temperature display is 100°C or lower. Also, limit use to a guideline of 20 minutes or less per session. SHOWDOWN 1: Operating Conditions (Guidelines): Guaranteed for 3 hours of use at a seat temperature of 80°C (equivalent to a 95°C temperature display in a typical sauna). Use in temperature environments higher than this is not covered by warranty. sauna device - Gakken Model: Operating Conditions (Guidelines): Guaranteed for 3 hours of use at a seat temperature of 80°C (equivalent to a 95°C temperature display in a typical sauna). Use in temperature environments higher than this is not covered by warranty.
- Where can I check the warranty period?
- You can check it from the [Sauna Device Info] screen in the app. The warranty period begins on the day it is first connected to the app after purchase. SAWATCH-3: Warranty period 12 months. SHOWDOWN 1: Warranty period 6 months. sauna device - Gakken Model: Warranty period 1 year.
- Is privacy taken into consideration when bringing it into the sauna or Bath Area?
- It is designed as a device that excludes all elements other than those necessary for the sauna experience. We express in our Sauna Safety Policy (https://info.sanokuni.com/sauna-safety/) that it is a product that eliminates functions such as cameras and audio recording and does not infringe on the privacy of others.
- Can the battery be replaced?
- From the perspective of waterproof performance, battery replacement is not offered for any model.
- Is it okay to charge it immediately after a sauna?
- Charging while wet is dangerous, so please avoid it. Please charge the unit after it has thoroughly dried.
- Can it be used as a smartwatch to display notifications from other apps?
- Because it is designed as a dedicated sauna device, none of the models can receive notifications from other apps.
- Can it be used underwater?
- Please avoid using it for professional diving (such as scuba diving). SAWATCH-3: Waterproof rating IP68 / 5ATM. SHOWDOWN 1: Waterproof rating IP68. sauna device - Gakken Model: Waterproof rating IP68.
- Please tell me about the behavior of "Delete Measurement Data".
- SAWATCH-3: Deletion operations are divided into two types. • Delete Heart Rate Data (within Sanokuni app): Deletes heart rate-related data. • Reset ("Settings" > "System" on the watch): Erases all data on the watch. SHOWDOWN 1: Retains sleep and step count data in addition to heart rate data. Deleting data via "More" -> "Delete Measurement Data" on the watch will reset step count data along with heart rate data.
- Please tell me the wrist sizes supported by the included band.
- SAWATCH-3: Supports wrist circumference of 16.6cm to 23.2cm. SHOWDOWN 1: Supports wrist circumference of min 14cm to max 21cm. sauna device - Gakken Model: Supports wrist circumference of min 14cm to max 20cm.
- What material is the band clasp made of? Is it plastic?
- The clasp is made of stainless steel.
- Is it okay to use it for a short time in a sauna with seat temperatures not covered by warranty?
- Since it is not covered by warranty, use is at your own risk. If the main unit becomes hot or starts swelling, discontinue use immediately. Please also discontinue use immediately if you notice any other abnormalities.
- Please tell me how to charge it.
- SAWATCH-3: Connect the included dedicated magnetic cradle (USB-A) magnetically to the charging terminals on the back to charge. It is also compatible with the SHOWDOWN 1 charging cradle. Estimated charging time is about 2 hours. SHOWDOWN 1: Bring the dedicated charging cradle into contact with the terminals on the back of the watch. sauna device - Gakken Model: Pull off the band and insert the main unit while aligning the direction of the USB terminal.
- Please tell me how to update the firmware.
- SAWATCH-3: If there is new firmware for the sauna device, it will be displayed when you open the Sanokuni App. Please follow the guide in the app to perform the update. Please also refer to the user guide: https://sanokuni.com/sawatch3/user-guide/
データ・計測
- Can data measured with the sauna device be synced to healthcare apps on my smartphone?
- Yes, it can be linked. Data measured with the sauna device can be linked to the following healthcare services. iPhone: Apple "Health" app Android: Health Connect Data that can be linked varies depending on the sauna device model. ⬛︎ SAWATCH-3 - Heart rate during sauna - Step count - Sleep ⬛︎ Other supported models - Heart rate during sauna When data is synced from the sauna device to the app, the data will also be reflected in the healthcare services configured for integration. Integration can be set up from the "Settings" page of the sauna device app. During initial setup, please allow access to the data you wish to link.
- Can data from a single sauna session be split into separate records?
- Data saved as a Totonoi Log cannot be split.
- My arm is thin and it is difficult to keep the sensor in close contact with my skin. Is there a way?
- Please try wearing it slightly higher up on your arm so there are no gaps.
- Body surface temperature or heart rate readings are sometimes abnormally low. Is it broken?
- Readings may be displayed low when used for the first time or after being reset. Normal values will be displayed as you continue to use it.
- When creating a Totonoi Log, the Facility I want to register is not registered and cannot be selected.
- Please temporarily create a Private Spot and register it. You can register a facility via [Settings > Report New Facility] in the app. Once the facility is registered, please change it from Private Spot to Facility.
- How much battery charge is sufficient to go into a sauna?
- SAWATCH-3: At the start of use, if 40% or more remains, recording for 4 hours is possible. SHOWDOWN 1: 80% or more recommended. Designed to record for 4 hours on a 100% charge. sauna device - Gakken Model: 80% or more recommended. Designed to record for 4 hours on a 100% charge.
- How many hours of sauna records can be stored?
- SAWATCH-3: Can measure up to 8 hours at a time in sauna mode. Sauna mode automatically ends after 8 hours. SHOWDOWN 1: Because it also retains data such as sleep and step count, the single data limit is under 3 hours. If it becomes full around 2 hours, please try performing "Delete Measurement Data" on the main unit. sauna device - Gakken Model: Can record data for under 4 hours.
- What happens if I go to the sauna twice on the same day?
- If data is obtained in two separate sessions, such as morning and night, two Totonoi Logs will be created. If there is a gap of 30 minutes or more after sauna mode ends, two Totonoi Logs will be created automatically.
- I forgot to switch between sauna Scene and cold bath Scene. What should I do?
- Editing is possible in the app. Please start from the timing when you can turn on the Scene.
- What happens if data exceeds the memory limit?
- The time count during sauna mode will continue, but data after it becomes full will not be recorded.
- When exiting sauna mode midway, sometimes a "Combine?" screen appears and sometimes it is combined automatically.
- Behavior changes depending on the interval. • Less than 1 minute: Automatically combined as the same Totonoi Log • 1 minute to 30 minutes: Displays "Combine?" dialog • Over 30 minutes: Counted as a separate Totonoi Log
- What are the rules for heart rate notifications during sauna mode?
- SAWATCH-3: You can create 8 notification Sets for each Scene of sauna, cold bath, and rest. Two conditions can be combined and set. • "Heart rate 130bpm + 5 min elapsed" -> Notifies only once when both conditions are met simultaneously • "Heart rate 130bpm" only -> Notifies at 130bpm heart rate regardless of time • "5 min elapsed" only -> Notifies after 5 min elapsed regardless of heart rate SHOWDOWN 1: After notifying once, no notification will occur for 5 minutes. After 5 minutes, a notification will be sent when the set value is reached again.
- When wet with water, screen tap responsiveness is slow. Is there a way?
- Please wipe the main unit and your fingers with a dry towel or sauna hat. This is a feature limited to the Premium Plan, but please also try auto-labeling (https://info.sanokuni.com/7ab7686f72f04ac7aab36e7f4182fd09).
- Should I wear the watch on the front or back of my wrist?
- Either is fine. Please wear it on whichever side fits closer to your skin.
- Sauna mode ended due to accidental operation. What should I do?
- Please enter sauna mode again. If you re-enter sauna mode within 30 minutes after mode termination, data will be merged as a single record.
- I want to record in a private sauna or tent sauna.
- You can create a Private Spot. Name, create, select, and register it.
トラブル
- Heart rate is being measured abnormally high.
- On rare occasions, a phenomenon where heart rate continues to rise after a cold bath or during rest has been observed. This occurs because the sensor cannot capture the heart rate properly. It can be resolved by taking off the band and putting it on again. It resets when the heart rate measurement starts from "--".
- Unable to send Totonoi Log data.
- Registering "Facility / Location" is a required item. Please register the Facility and send the data. If you still cannot send, please check your signal condition. Signal reception may be poor inside facilities.
- The sauna device stopped responding after the sauna.
- If the unit's temperature rises too high, it may become unable to boot. In that case, please try recharging it after discharging.
- Unable to connect with the Sanokuni app.
- Delete the Bluetooth registration from your smartphone's settings once. Try pairing again and then connecting to the app.
- totonoi data is not displayed. It shows (--).
- Please check the following. • Calculation is basically premised on the routine of "sauna -> cold bath -> rest". Calculation may not work correctly for other routines. • Check if the heart rate data in the Totonoi Log is labeled with Sets of "sauna", "cold bath", and "rest". It cannot calculate with only "sauna". • Sending under poor network conditions may result in failure to create data. Please make sure you are online.
- Water droplets formed inside the screen. Can it no longer be used?
- Depending on usage conditions, the inside of the screen may fog up. Please discontinue use once and dry the main unit completely. If the fogging disappears within a few days, there is no issue. If fogging does not disappear or water has entered the interior, do not use it as is; immediate replacement is required.
- Cannot connect with the Sanokuni app.
- Please check the following. • Smartphone is a compatible model and supported OS • Smartphone's Bluetooth is turned on • Bluetooth connection with smartphone is established (if not, try resetting the watch once and try again from Bluetooth connection) • If still paired with another smartphone, it cannot connect to a new smartphone. Please disconnect Bluetooth on the original smartphone.
- Even after Data Sync, there are no records / no data.
- The following cases are possible. 1. When "No data" appears after showing sync: Occurs when data is collected but no heart rate data exists. Can happen if sauna mode continues for a long time while the watch is detached from your arm (e.g., malfunction inside a bag). Resolved by syncing once before entering the sauna. 2. When sync does not start and "No data" appears: Can occur when a Totonoi Log is started without being connected to the app (disconnection during sauna is not a problem). 3. When unrelated heart rate data or an empty Totonoi Log is registered: The capacity may be full due to malfunction data. Resolved by syncing once before entering the sauna.
- The display of numbers on the sauna device is strange.
- If the time value during sauna mode is strange or the step count overflows, please try resetting once. Since data will be erased at that time, if sauna data remains, please sync with the app before trying.
- It is not displayed on the connection screen of the Sanokuni app.
- Please try "Initialize main unit" on the watch once.
- The app stopped launching.
- Please try deleting the app and reinstalling it.
- The app terminates unexpectedly.
- If the app terminates the same way under specific circumstances, please report it as a bug. We will investigate and fix it. Please inform us of the details via Inquiry in the app.
- Heart rate is recorded at a high value even during rest / Fluctuation in heart rate does not seem to relate to each sauna Scene.
- 1. If light enters the inner sensor from outside, accurate heart rate cannot be measured. Please ensure the back of the band and your arm are in close contact. 2. If numbers continue to rise before and after Scene transitions, please take off the band, lightly wipe the sensor, and put it on again. — If the above continues, please try resetting the unit. If symptoms occur frequently or do not improve after trying everything, there may be a malfunction. If within the warranty period, please contact the contact info listed in the instruction manual (warranty period can be checked from the app).
- The charging terminal broke. Is repair possible?
- From the perspective of waterproof performance, we do not perform repairs on the main unit.
- Firmware update fails.
- SAWATCH-3: If firmware update fails midway, please bring the smartphone and watch closer together and try several times. https://sanokuni.com/sawatch3/user-guide/ If it fails after trying several times, please contact us via Inquiry in the Sanokuni app.
アプリ・アカウント・サブスク
- How many days of data can be saved with the Basic Plan?
- The retention period for heart rate data in Totonoi Logs is 30 days. Detailed data will be deleted after 30 days.
- Does the Sanokuni app support changing smartphone models?
- Yes, it is supported. Please log in with the Apple ID or Google Account linked to your previous account. However, changing from iOS to Android is only possible if you created a sign-in with a Google Account.
- Can account data be transferred to another account?
- Data transfer or merging between accounts is not supported.
- Is simultaneous data measurement possible with SHOWDOWN 1 and the Otona no Kagaku model?
- Yes, it is possible. Since simultaneous connection to the app is not possible, disconnect the device that acquired data first in the Sanokuni app, then connect the next watch to perform Data Sync.
- Will there be support for Android OS 11 or earlier versions?
- There are currently no plans for that. We plan to prioritize the development of new features and overall system stability.
- Please tell me the compatible models and OS for the Sanokuni app.
- iOS 16 or higher / Android 13 or higher. Starting from the update at the end of 2026, support is scheduled to switch to up to the current minus 2 versions. If you are making a new purchase, please take note.
- What kind of features will be added in the future?
- We will publish the development roadmap soon.
- Data prior to 30 days ago has disappeared. Can it not be restored even if I switch to the Premium Plan?
- Data that has been deleted once cannot be restored at this time.
- I want to introduce it for users to use at a sauna facility, etc. Is this possible?
- Yes. It is also possible to sell them at retail counters. Please inquire via email (support-store@100plus.co.jp).
- Are there plans to support devices other than the sauna device?
- Currently, there are no plans to support Apple Watch or other smartwatches. This is because they do not meet the requirements for use inside a sauna room, so their use cannot be recommended. If a smartwatch meeting the requirements is released in the future, we will consider support.
- I want to cancel the Premium Plan.
- Please complete the procedure in your App Store or Google Play account. Cancellation procedures cannot be performed from within the app.
- Can I switch to another Sanokuni account while on the Premium Plan?
- Even if you create a new account or change to an account on the Basic Plan while continuing a subscription, that account will be in the Basic Plan state. If you wish to apply Premium to the new account, you can transfer the plan from the original account by executing "Restore" from My Page > Plan. At that time, the original account will be changed to the Basic Plan, and Totonoi Log data prior to 30 days ago will be deleted.
危険・保証
- Please tell me about the hardware warranty details.
- Regarding the sauna device warranty, please check 'About Product Warranty (https://info.sanokuni.com/product-warranty/)'.
- About dangerous actions and acts requiring discontinuation of use
- • Do not remove the sauna device inside the sauna room. • Actions such as disassembly, dismantling, or modification are prohibited. • If used near a heat source such as a stove inside a sauna room, radiant heat may cause the temperature to temporarily exceed the supported temperature. Please avoid getting too close to heat sources. • If the main unit becomes hot or starts swelling, discontinue use immediately. Please also discontinue use immediately if you notice any other abnormalities.