ECG at Your Wrist
Take a moment to record an ECG and review it in the app.







Health readings are for general wellness reference, not medical diagnosis or treatment.
App: H BandCompatibility & care

Choose a black or white MT300 for each of you.
$99.99 USD
Available
$99.99 USD
Available
Combined item price. Final total shown at checkout.
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Take a moment to record an ECG and review it in the app.
Answer calls from your wrist via Bluetooth.
Follow changes in skin temperature throughout your day.
Choose a sport mode and follow your activity.
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Take a moment to record an ECG and review it in the app.
Answer calls from your wrist via Bluetooth.
Make room for a quiet moment in your day.
Choose a sport mode and follow your activity.
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DESIGN
A round display, a defined bezel and a black silicone strap. Meet MT300 from a different angle.
DESIGN
A round display, a defined bezel and a white silicone strap. Meet MT300 from a different angle.
UP CLOSE
Explore the edge of the display, the case contours and the texture of the silicone strap.
UP CLOSE
Explore the edge of the display, the case contours and the texture of the silicone strap.
YOUR EVERYDAY STYLE
A white silicone strap with an adjustable buckle. A silver-tone case completes the look.
Choose this styleDOCUMENTED DETAILS
Explore the supplier certificates and test reports covering this model.
Certificate
RED 2014/53/EU · MT300 is included in the listed model family.
UNIA24012410EC-022024-04-09
Certificate
RoHS 2011/65/EU + (EU) 2015/863 · MT300 is listed in the appendix.
UNIB24012419HC-022024-04-09
Test report
Electromagnetic compatibility · EN 301 489-1 / -17 · MT300 model family.
UNIA24012410ER-052024-04-09
Test report
Classic Bluetooth radio testing · EN 300 328 · MT300 model family.
UNIA24012410ER-062024-04-09
Test report
Bluetooth LE radio testing · EN 300 328 · MT300 model family.
UNIA24012410ER-072024-04-09
Test report
Electromagnetic exposure · EN 50663 / EN 62479. Not a medical assessment.
UNIA24012410ER-082024-04-09
Test report
Restricted-substance testing supporting RoHS certificate UNIB24012419HC-02.
UNIB24012419HR-022024-04-09
Supplier documents apply to their listed models and tested samples. They do not certify medical use or health-measurement accuracy.
EVERYDAY WELLNESS
Optical heart-rate sensing and electrode-based ECG, built into MT300.
ALL-DAY HEART RATE
24-hour heart-rate monitoring helps you follow your daily trends.
24H
A MOMENT FOR YOURSELF
Record an ECG at your wrist and review it in H Band.
For general wellness reference, not medical diagnosis.
MOVE EVERY DAY
Choose a sport mode and follow your activity, one session at a time.
EVERYDAY WELLNESS
Optical heart-rate sensing and electrode-based ECG, built into MT300.
ALL-DAY HEART RATE
24-hour heart-rate monitoring helps you follow your daily trends.
24H
A MOMENT FOR YOURSELF
Record an ECG at your wrist and review it in H Band.
For general wellness reference, not medical diagnosis.
MOVE EVERY DAY
Choose a sport mode and follow your activity, one session at a time.
Take a moment to record an ECG using the watch's electrodes.
Illustrative screens and watch-face designs.
Keep daily steps and activity information close at hand, and choose a sport mode when you move.
Illustrative screens and watch-face designs.
Choose a different watch face to match your day, with custom dial options available.
Illustrative screens and watch-face designs.
Take a moment to record an ECG using the watch's electrodes.
Illustrative screens and watch-face designs.
Keep daily steps and activity information close at hand, and choose a sport mode when you move.
Illustrative screens and watch-face designs.
Choose a different watch face to match your day, with custom dial options available.
Illustrative screens and watch-face designs.
BATTERY & CHARGING
Align the magnetic charging cable with the two contacts on the back of your watch, then connect the USB end to a power source.
Magnetic charging
Supplied contact cable

PHONE CONNECTION
Pair your watch in H Band to sync the time and get started.
H Band
iOS · Android
Enable Bluetooth on your phone.
Open H Band and choose your watch’s Bluetooth name to pair.
BATTERY & CHARGING
Align the magnetic charging cable with the two contacts on the back of your watch, then connect the USB end to a power source.
Magnetic charging
Supplied contact cable

PHONE CONNECTION
Pair your watch in H Band to sync the time and get started.
H Band
iOS · Android
Enable Bluetooth on your phone.
Open H Band and choose your watch’s Bluetooth name to pair.
Choose black or white silicone. Connect with H Band and follow everyday activity.
Application et connexion
Associez MT300 à H Band sur votre iPhone ou téléphone Android. Les appels Bluetooth et les notifications prises en charge nécessitent un téléphone connecté. Les appels nécessitent aussi la connexion audio Bluetooth et les autorisations du téléphone.
Charge et batterie
Charge par contacts magnétiques avec le câble USB fourni.
Eau et entretien
Retirez la montre avant un bain chaud. Séchez la montre et ses contacts avant la charge.
Fonctions de bien-être
Lancez un enregistrement ECG à l’aide des électrodes de la montre et consultez-le dans H Band. Les mesures de santé fournissent des informations générales de bien-être. Elles ne sont pas destinées au diagnostic, au traitement ou à la prévention de maladies.
Marsyu MT300 Smart Watch with a silicone band, available in Black or White.

Everyday wellness, within reach.
Round design · Bluetooth calling

Everyday wellness, within reach.
Round design · Bluetooth calling
$99.99 USD