I collect many different types of watch and I currently have a GW M5610BA atomic solar watch with the blue lettering. I really like the watch, but am not really happy with the band. The forth hole in the band feels just about right and is a tiny-bit loose. The fifth hole is too tight. Therefore I always use the forth hold in the band. On dry days, I find that he watch tends to rotate on my wrist because the inside of the band is very smooth. There is nothing to keep it from rotating. Sometimes this is quite annoying. I am wondering if there is another model of this watch with a band that is not entirely smooth on the interior such that it won't rotate as easily.
Also, I have been thinking about purchasing one of the new Bluetooth models in the same style and am wondering if it is worth the upgrade. I understand that only one model is available in the USA and that model has a negative display. Is it a reasonable upgrade to get the Bluetooth watch? What functions does it provide other than being able to control function from Bluetooth on my phone? Does it really drain the battery? Are the Bluetooth models solar? Do the Bluetooth models also receive the signal from the atomic clocks? If the Bluetooth models do not receive the signal from the atomic clock, can they be told to automatically update from the phone that they are connected to?
Thanks for taking the time to answer these questions.