SAFETY HOURGLASS SAND TIMER: The large hour glasses with sand 60 minutes made by friendly high borosilicate glass, 100% hand-blown made clear glass. And each one has a number of time mark. You can easy to distinguish which timer for which usage.
PRECISE TIMER: This 60 min hourglass sand timer is mainly made for games, which is not a precision timing device, so there is time deviation. But Handvivo one hour sand timer has achieved the highest quality ±5% industry standard in the USA
PRACTICAL SAND TIMER: It is both a work of art and a useful time tool. handvivo Sand Timer provides an optimal time frame for work and rest. Meanwhile, fit for your Home, Office, Desk, Science, and Education. Makes a thoughtful gift for any occasion.
DURABLE DESIGN: We have increased the thickness of the glass from 1.55mm to 1.83mm. So, the sand timers set is not easily broken, and it will not easily cut your children’s hands
NONEY-BACK GUARANTEE: Our kids hourglass timer sand clocks 100% has been strictly tested by the factory. If you are not completely satisfied with it, pls CONTACT US BEFORE REVIEW and we will provide a full refund for you!
