20 Minutes Hourglass Quicksand Timer For Craft Ornaments, Birthday,Valentine's Day Gift

Really easy to use. Never tested accuracy, but precision isn't crucial to me and if it takes an extra few seconds or even a minute, I don't mind. It's a good deal for its price

What’s the point of a 20 minute timer if it’s actually a 20 minute and 15-20 second timer? There is no reason this shouldn’t be exact. Also, some of the sand gets stuck on the sides so you have to tap it down before you flip it over.