4.8.1 Compass
Because of the compass works differently in every region and altitude, please do the compass calibration before diving to get accurate results.
In the detailed setting, enter the compass menu and spin the device around within 2secs to complete Calibration correctly, before diving.
After 2 secs, it will be back to previous menu before.
4.8.2 Battery power indication
Battery condition is affected by oxidation inside the battery. If dive computer is neglected for long time, battery warning can be appeared, no matter the amount
of battery remainder. At the similar aspect, if the dive computer is exposed to low temperature battery warning can be appeared, too. When battery is low as it
showed in picture below, battery should be started charging immediately.
4.8.3 Diving at high altitude
It is recommended not to travel high altitude area after diving at ground level for amount of nitrogen in body may be changed.
Also, If you want to dive at high altitude, you should stay at least 3 hour at the level where you've done the previous diving.
in case of high altitude diving, decompression time may be shorten depends on the altitude value
