![](//vs1.manuzoid.com/store/data-gzf/18a2108570b7f7f47b693f7af7f74cd5/2/001533331.htmlex.zip/bg8.jpg)
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2.7 Low Power Indication
When HR-50/B/N is going to run out of battery, LED in 12 o’clock direction will
keep flashing. This is a reminder for user to replace a new battery. Please note that
when battery is low, heart rate / time / APP data transfer function will be off. However,
step / calorie / sleep function will still be working until HR-50/B/N runs out of
battery.
2.8 System Reset
2.8.1 For HR-50B & HR-50N
Please make sure that the heart rate function your HR-50B & HR-50N is off before
doing factory reset.Then, long press button for 12 sceonds to do system reset. All data
in HR-50B/N will be cleared after doing system reset. Thus, please synchronizing
your data before doing system reset.
2.9 NFC Tag Area
2.9 For HR-50N
Only HR-50N model has NFC function and you can tag your HR-50N by the NFC tag
area. Please refer to below shaded area about the NFC tag area.