The GW-6900A-9ER is a solar clock. It is powered by a rechargeable battery and resembles the time setting day in the early morning hours on a receivable time signal (available almost worldwide, here: DCF77) at. These salient features in my eyes promise high durability and reliability. Combined with the G-Shock-typical robustness likely an investment, from the one that has more ...
The 9 has a yellow body and a resin band. The color has not pushy, not gaudy. The black letters on the housing make a nice contrast. Overall, it is significantly larger than my GW-5610, almost a "real" G-Shock; but still adequate for my mid-sized wrist. However, it should be clear that a prominent watch case (approximately 1.7 cm), as G-Shock mostly the case, of course, also rather tends to get stuck somewhere. Who wants to wear the clock, for example, on labor, should keep this in mind ...
The side menu buttons are surprisingly good touch and to use - better than my GW-5610, although they are designed similar in principle. Präzisionsfummelei fingernails is required. A centrally located large button also allows manual backlight, which is bright enough in darkness in order to read at least the information of the main display can.
A star deduction I suppose but before because Casio has made a small mistake in the design: the display elements (main display and the three circular additional displays ...) are displaced about 2 - 3 mm below the solar panel. Depending on the angle and ambient light, this leads to a clear shadow cast in the ads. This makes the reading of information at times a little harder than necessary. Since the functionality is not affected but overall, I would identify this as a "blemish".
Instead of accompanying we-pack-825-Languages-together-on-the-size-of-Coaster Guide I also recommend here - also in order to assess an opinion about the functionality of the clock before it is purchased - the manual on casio -Europe [dot] com; To see Help and Support -> Manuals -> Watches -> Model Number: 3179th
