ith that being said, and if price is not so much of a concern to you, and you want a thicker watch with some additional features such as a thermometer and a compass, you might want to look at the G-Shock Mudman models. However, while all Mudmans are solar powered, not all of them feature multi-band 6 atomic timekeeping like this one.

SOLAR BATTERY CHARGE
Do not get frustrated if at first you receive this watch and the Battery Power Indicator will not go to high while indoors and exposed to light. That is what happened to me the first 2 or 3 days trying to raise the charge from medium to high near an indoor window. My advice is to keep a positive attitude about it. There is nothing wrong with the solar battery. Simply get the watch into outdoor sunlight for a few hours. I finally wisened up and did that on the third day, and the Battery Power Indicator went to high. That was 34 days ago, and it has been on high ever since.

OPERATION
This watch is extremely simple to operate. It has no unnecessary thermometer or compass which, to the average person, are not worth the hassle of setting up, especially since the accuracy of those features is always in question.

I like the front button for illumination of the light. Many G-Shock models have no front button instead utilizing the upper right side button for light illumination.

Further, I like the ability to scroll both east and west through the 48 city codes this watch offers. Not all G-Shocks can scroll in both directions. Sometimes they are limited to eastward scrolling due to configuration of the module with the style. But the capability of both east and west scrolling is far less clumsy.

If you want to further check out operation, I suggest researching the online Operation Guide where you will find very clear and concise product information.

Important Tip: The times displayed in the Timekeeping Mode and World Time Mode are linked. Because of this, be sure you select a Home City (the city where you normally will use the watch) BEFORE you set the time and the date. Sometimes people do not read the Operation Guide and initially get hung up on operation not realizing this.

INSCRIPTION
on Stainless Steel Back
ST. STEEL BACK - MADE IN THAILAND - Y - WATER RESIST 20 BAR - CASIO - 3179 - GW-6900 - SHOCK RESIST - SHOCK ABSORBING STRUCTURE

Also on the stainless steel back is an alphanumeric inscription or stamp which I believe to be a serial number.

INSCRIPTION
on Watchband Clasp
CASIO THAILAND

CALENDAR
The watch is programmed to automatically adjust the date of the month for the varying lengths of months as well as leap years to the year 2099.

CRYSTAL
This watch has a MINERAL crystal which is one of 3 crystal types commonly used in watches. For comparison of those types, I have described each of them below:

1. Acrylic crystal is an inexpensive plastic that allows shallow scratches to be buffed out.

2. MINERAL crystal (this watch) is composed of several elements that are heat-treated to create an unusual hardness that helps resist scratches.

3. Sapphire is the most expensive and durable crystal, approximately 3 times harder than mineral crystals and 20 times harder than acrylic crystals.

PHOTOS
The 5 photos included with this review are not mine.

我买了这个手表是因为它的功能和耐用性都很好。你不能仅仅因为价格就否定它。也就是说，如果价格对你来说不那么重要，而你想要一个更厚的手表，同时还要一些额外的功能，如温度计和指南针，你可以看看G-Shock的Mudman模型。然而，尽管所有的Mudman都是太阳能供电的，但并非所有的Mudman都具有像这样的多波段6原子计时功能。

太阳能电池充电

如果你首先收到这个手表，就算在光下，电池电量指示器也不会太高，不要灰心。这样的情况发生在我买的前2天或3天，我把它放在室内靠近窗户的地方，试图把电从中等增加到高等。我的建议是保持积极的态度，太阳能电池没什么毛病，只要把手表放在户外阳光下几个小时就可以了。第三天，我终于醒悟过来了，电池电量指示器变高了。那是3-4天前的事了，而且从那以后就一直很高了。

操作这只表操作起来极其简单。它没有不必要的温度计或指南针，对一般人来说，不需要这么麻烦的设置，特别是因为这些特征的准确性一直是有疑问的。

我喜欢用来照明的前置按钮。有很多G-Shock模型没有前置按钮，而是用右上角的按钮光照。

另外，我喜欢通过这个手表提供的48个城市代码向东方和西方滚动的能力。并非所有的G-Shock都能在两个方向上滚动。有时由于模块与样式的配置，它们仅限于向东滚动。但是东西方滚动的能力远没有那么不方便。

如果你想进一步了解操作，我建议研究在线操作指南，在那里你会发现非常清晰和简洁的产品信息。

重要提示：在计时模式和世界时间模式下显示的时间是链接的。因此，在你设定时间和日期之前，一定要选择一个家庭城市（你通常会使用手表的城市）。有时人们不读操作指南，拿着手表就开始操作而没有意识到这一点。

铭文

不锈钢背面刻着

ST. STEEL BACK - MADE IN THAILAND - Y - WATER RESIST 20 BAR - CASIO - 3179 - GW-6900 - SHOCK RESIST - SHOCK ABSORBING STRUCTURE

此外，不锈钢背面是字母数字铭文或邮票，我认为这是一个序列号。

铭文

表带卡环

卡西欧，泰国

日历

这款手表的程序是自动调整月数变化的日期以及闰年到2099年，以适应不同长度的月份。

晶体

这块手表由一种矿物晶体制成，是手表中常用的3种晶体类型之一。为了比较这些类型，我将它们描述如下：

1、丙烯酸晶体是一种廉价的塑料，允许浅划痕和抛光。

2、矿物晶体（这个手表）由几个热处理的元素组成，以创造一种不寻常的硬度，有助于抵抗划痕。

3、蓝宝石是最昂贵和耐用的晶体，比矿物晶体硬3倍，比丙烯酸晶体硬20倍。

这篇评论中包含的5张照片不是我的。

GOOD. I'm writing it because just got curious and looked into my Amazon Orders to see when I bought it. I bought the watch in 2010 and it's 2017 now. So AT LEAST 7 years, because the watch still works fine. I will say though, while I did wear the watch when I first bought it (for about 6 months) I then bought another watch that I started to wear and have rarely worn this watch since. I still like the watch but for whatever reason have not been actively wearing it. So the next big question is:
HOW HAS IT BEEN STORED FOR THE PAST 6+ YEARS???
I figured it would be better for the battery if the watch stayed fully charged. So for the past 6+ years it has ALWAYS been near a light source. Never in direct sunlight though. I've always had the face pointed towards a window somewhere between 4-10 feet with lots of light light.
I'm really curious how long it will last now. In the future I will try and remember to post updates if I remember. I'll also try to remember when to post when it eventually dies out.

在过去的6年里，它是如何被保护的？？？？

我想如果手表充满电的话，电池的状况会更好的。所以在过去的6年里，它一直在有光的地方，但不能阳光直射。我总是把它的表面朝向一个在4-10英尺高的窗户，那里有很多光线。

我真的很好奇它还可以用多久。以后如果还记得的话，我会尽量更新评论。一直发布评论，直到手表不能再用了。

scared and scratched. it's been my trustworthy adventure buddy for so long I had forgot when I purchased it. if I lost this watch, I would replace it with the same model without hesitation.

gh school students, who notice most things, and maybe one student has commented on the new watch. It works with anything I wear for work typically, although I plan to wear a stainless watch when I have to dress up in a suit. Not flashy, but certainly not ugly.

Features - for the price, features are excellent and reasonably simple to use. Multiple alarms, including one "snoozable" alarm, radio time keeping which is updated nightly, solar charged battery, stopwatch precise to hundredths, countdown time, secondary time zone, for when traveling. It's also got a day of the week and month/date display as well. 200 m water resistance, shock resistance, and a backlight display round out the watch's main features.

Experience - extremely positive! The watch has updated the time every night through the radio. It keeps a record of when it was last updated so you can check. The solar battery indicator was on "mid" when I received it, and stayed that way for a couple of weeks. After a day of yard work and watching a soccer game in the sun it moved to high level charge, where it's been ever since.

Summary - excellent, worry free watch. Keeps accurate time, date, and month with a few other features. Would purchase again and recommend to a friend.

我身高超过六英尺，其实也不是很高。这只手表很合适，看上去精致而低调。我在高中教书，他们会注意到很多东西，也许有一个学生评论过我这块新手表。我穿任何衣服工作它都很搭，不过我打算在穿西装的时候戴另一块手表。很实用，当然也不丑。

特点：对于这个价格，有这些功能已经很好了，使用起来也很简单。有多个警报器，包括一个小闹钟，每晚定时更新的无线电时间，太阳能充电电池，秒表精确到百分之一，倒计时时间，二次时区，这个在旅行时很有用。它也有每周的天数、月和日期显示。防水、防震和背光显示等功能，这些是手表的主要特点。

经验：非常好！手表每天晚上通过收音机更新时间。它会保存上次更新的记录，以便你查看。我拿到手表的时候，它的太阳能电池指示器停在“MID”处，而且这样停留了几个星期。在阳光下高速运转一天之后，它就会转到高水平的充电，一直都是这样。

总结：真的很棒，一个完全不用操心的手表。它保持准确的时间、日期和月份，当然还有其他一些功能。我还会买的，并把它推荐给朋友。