About the battery
You can check how much charge remains from the battery icon below the time display.
Battery icon
Hours
remaining*
GPS On
Pulse (Heart rate)
On
20 to 14 hours
14 to 8 hours
8 to 2 hours
2 to 0 hours
GPS On
Pulse (Heart rate)
Off
24 to 17 hours
17 to 10 hours
10 to 3 hours
3 to 0 hours
*
Standard hours during which you can use the Chronograph function while receiving a GPS signal.
Battery life may vary depending on the conditions (Frequency the light will be turned on, etc.)
c
Important:
Nothing is displayed when the battery is running out. If the device is left for a long time with a low battery, the
performance of the rechargeable battery will deteriorate. Make sure you charge the device
at least once every six
months
even when it is not being used.
Note:
Even if the battery runs out, measurement data is stored in the main memory.
SF-810 User Manual
Preparing and Basic Operations
29