Caution
15 16 17 18 19 20 21 22
23 24 25 26 27 28
In rare cases, individuals with photosensitivity (photoallergy) may
develop blisters or similar skin conditions even without pain. If this
occurs, turn off the power immediately and discontinue use.
・When a rise in core body temperature is detected, the screen will
・Press and hold the 'Function Button' for 3 seconds to stop the
・We recommend staying hydrated. If possible, please rest in a
・When a fall in core body temperature is estimated, the screen
67mm
88mm
When this product is off, press and hold the side Power button for more than
3 seconds to turn it on.
The motor will vibrate once, and the startup logo will appear on the screen.
② Power On
When this product is powered on, press and hold the side Power button for
more than 3 seconds to turn it off.
The motor will vibrate once when powering off.
When the "Caution" screen is displayed, press and hold the function button
for 3 seconds to clear the warning.
When the "Warning" screen is displayed, press and hold the function button
for 3 seconds to cancel the warning.
⑤ How to Clear Notices and Warnings
⑥ Wear Detection Function
③ Power Off
④ Display
Sound
Red
Risk Level: High
Warning
Yes
Yes
Screen Display
Yellow
Risk Level: Medium
Caution
Yes
No
Measuring during startup
Normal
Blue
NoVibration
No
Please use the dedicated charging
clip included in the box. Connect
the charging terminal (gold part) on
this product with the charging
terminal (gold part) on the charger
correctly.
Caution: Make sure this product
and the charging clip are in proper
contact.
Caution: To open the clip, press the
bottom part to open this product
attachment area. Do not force it.
Charging Connection: Securely attach the product to the charging clip
and connect to power. The charging animation will appear on the
screen.
Troubleshooting: If the charging animation does not appear, check
whether the watch and the charging clip are securely connected and
whether the power connection is proper.
Status indication: The charging animation remains displayed during
charging; when the battery is fully charged, the animation stops and
switches to a full charge notification, and you can disconnect the power
supply.
※Remaining Battery
Low Battery
Notification
When the battery level falls
below 10%, this screen will
appear every 30 minutes.
Charging Method
If the main unit overheats during use, stop using it and contact customer
support.
Do not apply strong impacts such as pulling or dropping the product, as
this may cause malfunction.
Due to the nature of the materials, this product may fade or change color
from moisture, sweat, sunlight, friction, etc.
When using this product, please be careful not to catch on or damage
surrounding objects.
Do not use this product for purposes other than pulse wave measurement,
as this may cause malfunction.
The algorithm installed in this product is recommended for users aged 12
and older.
This product does not guarantee safety from extreme heat risks.
Regardless of what the product display shows, we strongly recommend
taking appropriate rest if you feel unwell.
This product does not guarantee the user's health condition or the presence
or absence of illness.
If the accuracy of pulse wave measurement decreases due to dirt on the
sensor or improper wearing, the calculation accuracy will also decrease.
Please wear this product correctly and clean it regularly.
Usage Precautions
If this product does not work properly, such as "measurement does not
start even when turned on (blue flashing)" or "warning message does not
disappear even when the function button is pressed", please perform a
reset operation.
To reset this product, please hold down the power button for 15 seconds.
This product will power off and restart. Performing a reset will restore
this product to its factory default settings.
If this product still does not work properly after the reset operation,
please contact Customer Support.
When Encountering Problems
This product uses a lithium-ion battery. When disposing of the battery,
please comply with the waste disposal and recycling regulations in your area.
Disposal of This Product
For accurate pulse wave measurement, regularly wipe the sensor and
band parts with a cloth.
Do not use benzene or alcohol.
Wipe clean especially after exercise or sweating. As this product is
water-resistant, you can also use a soft cloth lightly dampened with water.
To prevent over-discharge, charge this product at least once every six
months.
Care InstructionsProduct Oveiew
Package Contents
Main unit Charging clip User manual
hamon band V is a product that uses a patented algorithm (*1) developed
by Mitsufuji Corporation and the University of Occupational and
Environmental Health to estimate rises and falls (*2) in core body
temperature based on pulse wave data. The algorithm operates correctly
when used in extremely hot environments. Calculation starts when this
product is worn (powered on). When the heat risk level becomes
moderate (Medium Risk), this product alerts the user with a yellow LED
and vibration. When the risk increases further (High Risk), it warns with a
red LED, vibration, and sound. This product aims to encourage users to
rest and stay hydrated through these LED flashes, vibrations, and sounds.
(*1) Patent No. 7175473
(*2) Patent pending
This product estimates changes in core body temperature based on
pulse wave data and does not measure body temperature directly.
This product is not a medical device.
Heat Stroke Prevention
【Drink Plenty of Water】
Whether indoors or outdoors, always replenish water, salt and oral
rehydration salts regularly, even if you do not feel thirsty.
【Avoid Heat Exposure】
Stay in cool places as much as possible, such as well‑ventilated shaded
areas.
"Heatstroke Prevention" (Ministry of Health, Labour and Welfare)
（https://www.mhlw.go.jp/stf/seisakunitsuite/bunya/0000170795）
"Source: Ministry of Health, Labour and Welfare"
How to Use
For accurate measurement, please wear this product so that the sensor
part is in close contact with your skin.
※ Please remove the protective sticker from the sensor before use.
① How to Wear
Please wear it on your wrist as shown in the figure.
hamon band V
MH10-B26
43.5ｘ24.8ｘ11.85mm
PC
About 29.6 g
Adjustable size: 165–238 mm
Silicone
Black
IP67
24 hours or more
-10 to 50°C
3.8V 190mAh
2PIN interface
1–1.5 hours
Made in China
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■Product Name
■Model
■Dimensions
■Material
■Weight
■Watch Strap
■Strap Material
■Strap Color
■Waterproof & Dustproof Performance
■Continuous Usage Time
■Operating Environment
■Battery
■Charging Interface
■Charging Time
■Origin
Product Specications
This product automatically detects whether it is being worn using the rear
sensor. When removed from the wrist, it automatically switches to
power-saving mode. When worn again, measurement automatically resumes.
This helps save battery and allows safe use.
※ If not worn correctly, the wear detection function may not work properly.
How to Check the Status
Measurement Status (Blue)
Wear the Wristband above the wrist bone. Adjust the strap to a
moderate tightness, ensuring the sensor on the back of the watch fits
closely against the skin without obvious shaking.
After this product is turned on, the continuous pulse wave
measurement function will start automatically. The optical pulse wave
sensor on the back will enter operating state, and the sensor area will
emit a flashing green light. This light is a dedicated optical signal for
pulse wave data collection, not a device malfunction. Please use it with
confidence.
No part of this mannual may be reproduced or transmitted without permission.
For product improvement purposes, the specifications and appearance of
this product are subject to change without prior notice.
Please note that we shall not be liable for any damage or malfunction of
other equipment caused by the use of this product.
Any export of products classified as strategic goods or services
requires an export or service transaction license in accordance with the
Foreign Exchange and Foreign Trade Act.
Safety Precautions
Contact Information
<Customer Support>
Customer Support Hours
10�00–17�00 Monday to Friday (excluding weekends and public
holidays)
<Distributor>
MITSUFUJI CORPORATION https://www.mitsufuji.co.jp/
How to Use
Normal (Blue)
Medium Risk (Yellow)
High Risk (Red)
・Operating normally, no problems.
・Please pay attention to the heat stroke index (※WBGT value)
during work.
・When a rise in core body temperature is detected, the screen will flash
・Press and hold the 'Function Button' for 3 seconds to stop the alert.
・We recommend staying hydrated. If possible, please rest in a cool place.
・When a fall in core body temperature is estimated, the screen will
The alert may sound even if you do not feel unwell.
Since internal body changes often occur without noticeable symptoms,
we strongly recommend taking regular breaks and staying well hydrated.
※WBGT value: A heat index calculated based on temperature,
humidity and radiant heat.
This product incorporates a built-in lithium‑ion rechargeable
battery.
Do not throw this product into fire, heat it, charge it at high
temperatures, or place it in high-temperature environments.
This may cause fire, burns, accidents, or overvoltage,
as well as overheating, ignition, bursting, or leakage
of the built-in battery.
・If the product is used in the ways described above, it will not be
covered by the warranty in case of malfunction.
Do not disassemble or modify this product.
This may cause fire, burns, injury or electric shock.
Prohibited
Do Not Disassemble
Do not insert metal objects into this product.
Doing so may cause fire or electric shock.
Do not drop or hit this product against anything.
If the product is damaged, stop using it immediately.
Continued use may cause fire or electric shock.
If the product becomes deformed or damaged due to dropping
or other impacts, do not use it, as this may cause the built-in
battery to overheat, ignite, explode or leak.
Charge the product regularly.
Even if you do not use the product for a long time, please
charge it approximately every six months.
The built-in battery may bulge or become damaged.
Please wear the belt correctly and do not fasten it too tightly,
It may cause inflammation or rash.
Discontinue use immediately if skin irritation, inflammation, or
rash occurs.
Danger
Danger
Danger
Caution
Thank you very much for purchasing this product. To ensure you can use it with
complete peace of mind, this product has been delivered to you after strict
quality control and inspection. In the unlikely event that any defect or
malfunction occurs, we will provide free repair or replacement for one year in
accordance with the warranty terms set forth in this Warranty Certificate.
1. If the product malfunctions within the warranty period under normal use in
accordance with the operating instructions and precautions described in the
user manual, we will provide free repair. Please contact hamon band
Customer Support if you require free repair service.
2. The product is not covered by free repair or replacement even within the
warranty period in the following cases:
(1) This warranty certificate is not presented.
(2) The date of purchase, customer’s name, or retailer’s name is not filled in on
this warranty certificate, or any content has been altered.
We kindly ask that you clearly fill in your name, address and telephone number.
Please note that personal information such as your name, address and telephone
number provided on this warranty certificate may be used to verify your eligibility
for free replacement and to manage repair services. Fields marked with
※ are mandatory. This warranty will be invalid if these fields are left blank, so
please be sure to fill them in.
Request to Customers
MITSUFUJI CORPORATION
Labo Building 13F, Keihanna Plaza, 1-7 Hikari-dai, Seika-cho, Soraku-gun, Kyoto.
Manufacturer
【Warranty Terms】
Warranty
Product Name
Model Number
Warranty Period
hamon band V
MH10-B26
1 year
Retailer Name
※To be filled in by the retailer.
※
(3)If this product has been improperly repaired, disassembled/modified, or if
the display label on the main unit has been altered or removed.
(4)Malfunction or damage caused by careless handling or misuse.
(5)If the cause of malfunction is in equipment other than this product.
(6)Malfunction or damage caused by dropping, water ingress, or pressure after
purchase.
(7)Malfunction or damage caused by fire, earthquake, flood, lightning, or other
natural disasters, pollution, salt damage, abnormal voltage, etc.
(8)Wear or damage to consumable parts (such as the built-in battery).
3. We cannot accept responsibility for any accidents that occur as a result of
using this product incorrectly or for purposes other than pulse wave
measurement.
4. We cannot accept responsibility for any incidental damages related to
malfunction of this product.
5. Except in cases of intentional or gross negligence on our part, our liability for
damages based on breach of contract or misconduct shall be limited to the
purchase price of the product.
6. Replacement parts exchanged through free repair are the property of the
manufacturer.
7. This warranty is valid only in Japan.
8. This warranty will not be reissued, so please keep it in a safe place.
※ This warranty guarantees free repair under the period and conditions stated
in this warranty. It does not limit the legal rights of the customer toward us or
any other business operator.
Warranty
Your Name
Customer
Your
Address
TEL
Date of
Purchase
Gregorian
calendar
Year Month Day
※
User manual
Thank you for purchasing this product.
Please read this manual carefully before using the product to ensure
correct operation.
Please keep this manual properly.
MH10-B26
User manual
Thank you very much for purchasing this product.
Please be su re to read this manu al carefull y before using t he product
and use it correctly.
Please kee p this manual pro perly.
MH10 -B2 6
Component Names
Function Button Power Button
Display
Watch Band
Sensor
flash yellow and vibrate repeatedly.
alert.
cool place.
will change to blue.
red, vibrate repeatedly, and sound an alarm.
change to blue.
FCC Warning Statement
Changes or modifications not expressly approved by the party
responsible for compliance could void the user’s authority to operate
the equipment. This equipment has been tested and found to comply
with the limits for a Class B digital device, pursuant to Part 15 of the
FCC Rules. These limits are designed to provide reasonable
protection against harmful interference in a residential installation. This
equipment generates uses and can radiate radio frequency energy
and, if not installed and used in accordance with the instructions, may
cause harmful interference to radio communications. However, there
is no guarantee that interference will not occur in a particular
installation. If this equipment does cause harmful interference to radio
or television reception, which can be determined by turning the
equipment off and on, the user is encouraged to try to correct the
interference by one or more of the following measures:
-- Reorient or relocate the receiving antenna.
-- Increase the separation between the equipment and receiver.
-- Connect the equipment into an outlet on a circuit different from that
to which the receiver is connected.
-- Consult the dealer or an experienced radio/TV technician for help.
FCC Radiation Exposure Statement
This device complies with Part 15 of the FCC Rules. Operation is
subject to the following two conditions:
(1)This device may not cause harmful interference, and
(2)This device must accept any interference received, including
interference that may cause undesired operation.
The device has been evaluated to meet general RF exposure
requirement. The device can be used in portable exposure condition
without restriction.
