About this item

• More accurate: Made in USA and Imported. The small sand timer combo pack have achieved the highest quality ±5% industry standard in the USA
• Durable design: The glass thickness of hourglasses from 1.55mm to 1.83mm. Also, the sand timers set with break-resistant borosilicate glass and protective cover is not easily broken, more durable than other brands of sandglass timer
• Premiums booklet: Good idea to help your kids do things more efficiently and develop a strong sense of time. Each digital hourglass timer with different bright color,looks impressive and easy to tell.
• SuLiao preschool sand wacth is made from premium plastic and safe glass, lead-free and chromium-free. You and your children can use it safely