If you want to view my In Depth Review of the other Oceanus watch in this video (OCW-S100), follow this link... https://youtu.be/LPPVafYs-04
For tips on how to add or remove links from a "Pin and Collar" style watch bracelet like the one on this Oceanus watch, here's a video I made previously... https://youtu.be/rMBreRzbJ_0
This video features an entry-level Oceanus watch with a gorgeous, green color scheme. It has a simple, 3-hand analog display with a date window at the 3:00 position. This watch charges itself with Casio's "Tough Solar" technology and it can set itself to the correct time using Multiband 6 radio reception. In addition, it can set itself using a Bluetooth link to a smart phone or tablet. This watch has a stainless steel case and bracelet with a high quality finish similar to what folks have come to expect with Grand Seiko watches. The case is water resistant to 100 meters. When the watch is unable to correct itself using Multiband 6 or Bluetooth connections, it will still be accurate to plus-or-minus 15 seconds per month.
In the video I didn't emphasize the anti-reflective coating on this watch's Sapphire Crystal. Yes, it's a very impressive crystal. If it's clean and the lighting is right it really does seem, sometimes, like there's no crystal there at all. It's very nice.