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The wristband uses light reflection principle, penetrates the skin
through the light source and collects the signal reflected to the
sensor to calculate your heart rate.
If you don’t wear it tightly,
there will be ambient light reaching into the sensor, which will
affect measurement accuracy.
Is the wristband waterproof?
The device supports IP67 certification standard. It means that
you can immerse device for 30 minutes into one-meter depth.
Practically, it means that this device shall withstand light rain or
washing hands. Device with this certification is not waterproof in
streams of water, against high pressure or high-temperature
water.
Does the Bluetooth connection need to be opened all the
time? Is there any data after disconnection?
Before the data is synchronized, the data is kept on the
wristband host (seven days of data can be retained). When the
Bluetooth connection of the wristband and the mobile phone is
successful, the wristband data will be automatically uploaded to
the mobile phone. Please synchronize data to the mobile phone
on a regular basis.
