G-Shock GW-1800DJ-1A9 - Manual (Page 18)

E-17
• Proper signal reception can be difficult or even impossible under the conditions listed
below.
• Signal reception normally is better at night than during the day.
• Time calibration signal reception takes from two to seven minutes, but in some
cases it can take as long as 14 minutes. Take care that you do not perform any
button operations or move the watch during this time.
Inside or
among
buildings Inside a
vehicle Near
household
appliances,
office
equipment,
or a mobile
phone Near a
construction
site, airport, or
other sources
of electrical
noise Near high-
tension
power lines Among or
behind
mountains