Review on SWISSELITE Glass Biloba Puff Sand Timer/Hourglass - Decorative Home, Desk, and Office Accents by James Beird

to limit the time I was at my desk. I didn't want to buy a timer because there are too many things in my life that are already beeping or ringing. So I looked for an hourglass that would tell the time more or less close to 30 minutes as that is the longest you should be sitting without getting up. As it turns out, they keep the time accurate to within 30 minutes. Perfect. I'm already used to looking at him at the exact moment when the sand runs out and getting up from my chair. around it, like other hourglasses, it will eventually break. In addition, it is slightly higher than stated in the description. More like 5.7".