Maxcom FW51 Crystal User Manual page 9

FAQ
Cannot turn on. Please long press the ON/OFF button for 3s or charging your watch in
case the battery power too low
Bluetoon not connected or cannot connect:
1. Please reset the watch and reconnect
2. Please restart your phone and reconnect
3. Disconnect any other Bluetooth devices
Inaccurate measurement of heart rate/blood pressure/blood oxygen:
1. It is generally caused by poor contact between the sensor of the watch and the human
body during measurement
2. Please pay attention to the full contact between the sensor and the wrist during
measurement
3. For people with darker skin tone and more hair on their arms, please turn on
enhanced measurement in App [Device>Enhanced Measurement]
Inaccurate sleep data:
1. Sleep monitoring simulates human's natural state of falling asleep and waking up,
and requires normal wear
2. Wearing it too late or while sleeping may cause errors
3. Sleep data is not monitored during the day, and the default sleep monitoring is from
9:30 pm to 12:00 pm the next day
For more frequently asked questions, please check the App [My>FAQ]
ATTENTIONS
1. Do not seriously hit the host.
2. Do not contact chemicals such as benzene and diluents.
3. Do not approach strong magnetic fields or electric shock stations.
4. Please avoid direct light or heating appliances.
5. Do not disassemble, repair, or transform by yourself.
6. Discard packaging and batteries. Please classify and properly dispose of old electronic
products.
7. It is not suitable to wear it when bathing.