Review on Hourglass Sand Timer - 5/10/15/30/45/60 minutes Sand Glass Timer for Various Occasions - Perfect Mantel, Office, Desk, or Shelf Decor - Ideal Christmas Birthday Gift - Fun Games, Classroom Timer, Kitchen Aid - (Blue, 5 min) by Lindsey Garcia

If they weren't so big I would give them a 1. Large hourglasses at a good price are hard to find. I like that they have a big base so they don't get knocked over easily. Good to use for preschoolers. BUT. the time was not accurate. I bought a 5 minute timer that was only 3 seconds off the right time. But the 15 minute timer takes almost 18 minutes! So I'm a little annoyed. I don't think it's worth the wait to return it for a refund (since it took that long in the first place) so I might as well buy another one elsewhere.