G-Shock GW-9200BPJ-1 - Manual (Page 104)

E-102
Scrolling
The E and B buttons are used on the setting screen to scroll through data
on the display. In most cases, holding down these buttons during a scroll
operation scrolls through the data at high speed.
Sensor Malfunction Indicator
Subjecting the watch to strong impact can cause sensor malfunction or
improper contact of internal circuitry. When this happens,
ERR (error) will
appear on the display and sensor operations will be disabled.
Barometric Pressure
Measurement
Altitude
Measurement