I have two of these and the black edition one, They are very reliable and very nice to wear. You don't need to change the battery as it's rechargeable by the direct sunlight or just normal daylight. It's a heavy watch but very comfortable on the wrist, It's chunky and eye catching. At a certain time at night between 2-3am it sets itself by a signal so the watch is correct to within 2 seconds all the time. I highly recommend this watch to anyone who likes there watches.
Tengo este reloj y es verdaderamente complicado ajustar la hora "manualmente" sin sincronización. Es el reloj más complicado que he manejado en mi vida y tengo varios modelos de casio edifice, seiko,citizen...
+Carol Hooper Take it to an authorised Casio dealer would be my best advice. It's solar powered so I wouldn't worry. I own another solar powered g-shock that is still going strong after 15 years!