My son kept breaking his timers, and then we got these with the idea that he could at least break a few, but it turns out these are durable, so they've lasted a long time! Accurate, and my son loves his.I gave one to my son and daughter. The multiple colors are nice for boys & girls. In Not sure ite exactly 2 minutes but all kids have to do is flip it ove and they get more time. It has no buttons to complicate things & makes brushing more fun.it gives them encouragement knowing its over when the sand runs out.Helpful to get kids to brush a good amount of time. Only one gets stuck and doesn't filter all the sand. We don't need all 6 tho, so it wasn't a big deal here. Nice colors. Everyone in the house uses them!They don't all have the same amount of sand. Some are way lessTurning over 7 two minute timers simultaneously will give you 7 different results.All 7 of these run to a different time length and only 2 of the seven actually almost made it to 2 minutes. At least pink was one of them so my kids weren’t too sad. Super easy to use. Just wish they were all 2 minute times.This pack was supposed to contain 7 TWO minute timers! How on earth are they all 2 minute timers when they all contain very different amounts of sand and all finish at very different times when all flipped at the same time?!?! I mean look at the blue one it has barely and sand while the pink one has 3 times more sand!!!My kids love them and very durable!