Question 1

Is it new brand.

Accepted Answer

New brand? Casio has been around for decades.  It’s a quality calculator watch. Only downside I see is it doesn’t have a light up screen.

Question 2

Why does the ad say Water Resist: 30M, when the watch itself doesn't have 30M on the face?  Is it really a 30M watch?

Accepted Answer

https://www.casio-intl.com/asia/en/wat/water_resistance/

How do watch buyers still not know, 30m and "Water Resist" are essentailly the same thing? People are often confused by what the stated water resistance of watches actually means. Does a watch with '30 metres or 30M' as the water resistance mean you can dive with it as deep as 30 metres' No, you can not. So why do they write 30 metres on it? This is referring to static pressure, not the actual depth of water it can be used in. This is a common misconception.

30 metres refers to the pressure experienced if it was static at a depth of 30 metres. When the watch moves the pressure rises well above a static pressure of 30 metres. 30 metres of static water pressure is easily achieved even in shallow depths. Consequently, a 30 metres watch should not be used for diving, however it can be immersed in water.

Here are some common explanations of common water resistance standards: 
Water resistant means splash proof only - it can withstand slight splashes and rain, but is NOT to be immersed in water.

The list below outlines the general guidelines of the water resistancy you will receive from an accordingly rated watch.

30 Metres 
Splash proof and waterproof in small amounts of water

50 Metres 
Can be submerged in water. Suitable for swimming, but not guaranteed to be resistant to jumping into the pool.

100 Metres 
Suitable for swimming and shallow diving

200 Metres 
Suitable for diving - not deep sea.

If you have the battery in your watch changed, you should be sure to have it resealed and pressure tested by the jeweller to ensure that it is still water resistant to the stated depth

Question 3

Does this watch have a countdown timer? How many alarms does it have?

Accepted Answer

This watch doesn't have a count down timer but a stop watch which can be lapped. This also only supports one Alarm at a time

Question 4

Does this watch have a hourly reminder?

Accepted Answer

I just looked at the watch.  There's nothing obvious about an hourly reminder.  It has an alarm but I can not even hear it.  It has a stop watch counter.  Personally, I never use the calculator.  Inconvenient, buttons too small.  I no longer have the instructions and I looked through what I could find and I did not find an hourly reminder?

Casio General Men's Watches Data Bank CA-506-1UW - WW, grey, 33 mm., Quartz Watch

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