This episode of The Good Timekeeping Show is an in-depth review of the Casio Waveceptor WVA-M630D-1A4JF. The watch uses Casio's Module 5161, which is also used in several other watches in different color combinations and styles. The basic model number of these watches is WVA-M630 and all of the other numbers and letters in the model number designate different colors and different places where the watches are available for sale. Most are intended to be sold in the Japanese retail market but, if you live in the USA as I do, you can easily purchase them through Amazon or eBay. There are also a couple of Casio Waveceptors made for the US market which use this module 5161. They are WVA-M640 watches. And you may find watches from Casio's Lineage collection using this module. The models often begin with the designation LCW-M170. Lineage watches often use more titanium in their cases and feature sapphire crystal for improved scratch resistance. The watch faces also have a less-cluttered, more "high-end fashion" look. The setup and usage demonstrated in this video applies to ALL Casio watches using the module 5161.
These watches each have Casio's "Tough Solar" technology. The face of each watch contains a solar cell which automatically charges an internal battery with normal exposure to normal amounts of daytime lighting. My first "Tough Solar" watch from Casio is still running strong after more than 13 years without ever having to worry about replacing its battery.
These also have Casio's "Multiband 6" technology to receive Atomic Time data from up to 6 transmitters in various parts of the world. There's one in China, two in Japan, one in North America, one in the UK and, finally, another one in Germany. If you are using this watch in a part of the world which is too far away to receive the data from those transmitters then the watch will function as a normal quartz watch with accuracy to within 15 seconds per month. But if you are in a place where good reception of Atomic Time data is successful, then your watch can double-check itself every night and keep itself accurate to within fractions of a second all the time! It can even make Daylight Saving Time changes automatically.
