DLC処理がしてあり鏡面なので美しいのですが、付け心地はあまり好みではありません。ツルツルの裏蓋は汗がたまりやすくて気持ち悪くなるし、少し分厚いのか腕への圧迫が気になります。これは個人差があるので参考程度と思ってください。そのうち慣れるかもしれません。 If desired, the key tones can be switched off with the mode button. After switching off, there is no longer a beep when switching from one function to the next. Set alarms or countdown timers are still active after the key tones have been switched off.

The 5000U is sound and satisfying. Whether I'm sat at my desk, out walking, going to the store, driving, airports, desert, forest, ocean, whatever, it's wonderfully constant. You can get it wet, covered in dirt or sawdust or sand, bang it, drop it, leave it outside on the lawn all night - and it'll just keep on doing what it does flawlessly. And for those who know about watches, it has a fascinating heritage and design ethos. Individualistic. Retro chic. Tough. Bullet-proof reliability. Resin consists of synthetic resin and is the ideal material for bracelets due to its extreme durability and flexibility. The time display can be set to either 12 or 24 hour format. In 12-hour mode, a "p" in the display represents the second half of the day, i.e. 12 noon to 11:59 p.m. Yep. Totally. Though, whilst you are technically correct, these sort of changes can double, triple, and quadruple the price of this style of watch. That is, in terms of how Casio typically places things like sapphire, titanium, STN etc in higher models. So, that kinda moves it out of the "classic square" category for me. For athletes and anyone who wants to know exactly: Elapsed time, intermediate time and final time are recorded with an accuracy of measured in hundredths of a second. The measuring capacity reaches up to 24 hours.Perfect for free diving without equipment: the watch has been tested for water resistance up to 20 bar according to ISO 22810. The daily alarm reminds you of recurring events with an acoustic signal at the set time. This model has five independent alarms - especially useful for taking medication every day or keeping regular appointments.

M5610U-1JFは長年の改良・コストダウンで、ケースは樹脂となり裏蓋はビス止めになっています。もちろん防水性能は確保しているし、電池（ 二次電池）交換は5～10年に一度です。樹脂にタッピングビス止めは何度もつけ外ししているとバカになる可能性もありますが、数回の開閉には十分耐えるはずです。よって寿命を迎えるのはベゼル外装の 加水分解のほうが先になるでしょう。 The case is a combination of stainless steel and resin, which makes the watch elegant, robust and lighter at the same time. For those who want to know exactly: The countdown timer helps to remember special or recurring events by emitting an acoustic signal at the set time. The time can be set in minutes and up to 24 hours in advance. This feature is especially useful for daily medication or interval training.