About Marsyu

01 · FIRST USE

Connect your SW1.

Companion app: G Band. This is the name in the supplied SW1 specification. Use the app linked in the instructions supplied with your device. Check its current App Store or Google Play requirements before installing. If the app or menu differs, contact us before switching apps.

Attach the supplied magnetic cable and connect it to a 5V USB power source. SW1 has no screen; check the band’s vibration/light response rather than waiting for a watch face.
The dedicated SW1 specification names G Band. Enable Bluetooth, keep the band near your phone, then use the app’s device-connection screen to select the band.
Check that the app shows the band as connected. Use the app to review supported activity, heart-rate and sleep records; do not look for on-band menus or call audio pairing.

Charging & everyday care

Use the supplied magnetic cable with a 5V USB power source. Exact charging current and full-charge time are not confirmed for this SW1 version.
Keep the band and its contacts dry before charging. Do not use a damaged cable.
Wear the band comfortably and keep the skin-contact area clean. Remove it if irritation occurs.

02 · EVERYDAY FUNCTIONS

Make sense of your records.

Once connected, use the app to review the activity, heart-rate and sleep records supported by your device. Sleep records require wearing the device during sleep. Available settings depend on your device and app version.

Health readings are for general wellness reference, not medical diagnosis, treatment or prevention. Do not change medication based on these readings.

SW1 is screen-free. There is no watch-face menu, call microphone or speaker. This guide does not include ECG operations.

See real app examples

Original English app screens from a demonstration session. The readings belong to that session; these images do not confirm every menu or measurement for your device.

Activity records: actual English app demonstration — Activity records

Heart-rate records: actual English app demonstration — Heart-rate records

Sleep records: actual English app demonstration — Sleep records

03 · TROUBLESHOOTING

Try these checks first.

The app cannot find my device

Make sure Bluetooth is enabled, the device is powered on and charged, and your phone is nearby. Check that the device is not already connected to another phone. Reopen the app and try its device-connection screen again. If it still cannot connect, contact support with your model and app version.

Records or time are not syncing

Open the companion app and check the device connection. Keep the app allowed to run in the background as needed, then reconnect. Do not assume that a record visible in a demonstration is supported by your particular model.

Notifications are missing

Check the phone’s Bluetooth connection and the app’s notification permissions. Enable only the notifications you want. Phone settings and background restrictions can affect delivery.

The device does not charge or switch on

Check the supplied cable, USB power source and contact alignment. Make sure the contacts are clean and dry. If charging still does not start, stop using a damaged cable or device and contact support.

A reading looks unexpected

Check fit and sensor contact, keep still during a manual recording and review the instructions for your model. Readings are for general wellness reference. Do not use them for diagnosis, treatment or medication decisions; seek medical advice about health concerns.

04 · YOUR MANUAL

The right guide for your device.

Need a copy of your manual? Tell support your model and preferred language so we can send the matching guide.

Request your manual

05 · HERE TO HELP

Still need a hand?

Contact MARSYU with your model name, a short description of the issue and your order reference if relevant. A photo of the device and its model label can help. Please do not send passwords, full payment details or unneeded health readings.

Contact MARSYU

rhoddudley4@gmail.com