Em bê nguyên từ Note bên Facebook sang đây, mời các bác đọc cho vui. 
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Watches aren’t just for fun, they can be multi-functional. Like my pilot-themed watch here, it has:
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A 60 minute sum-up chronograph function. Wish I could hold my breath for half of that!
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A tachymeter scale so I can measure my traveling speed. With measure range from 60mph to 1000mph, I need to become superman to test this function!
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An 24 hour scale, aka. am/pm indicator. Now I won’t even have to look at the sun to tell whether it’s day or night anymore!
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A slide rule which is extremely helpful for currency conversion. I’ve set it here at the rate of 1USD=80JPY, I just set it 1USD=79JPY the last second but I have no idea what it’s gonna be the next 10!
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A 360 degree scale direction indicator. Now I just need Google Map to tell me which direction is North, then my magical watch will tell me the other ones. Pretty awesome, huh?!
And for your information, I use those functions for like once a year, mainly for fun.
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