Dentist's Top Recommendation: Sand Timers for Kids' Tooth Brushing! - **Children's Two-Minute Brushing Time:** Designed based on scientific knowledge, this timer ensures children don't feel the brushing time is too long, keeping them engaged and interested in oral hygiene. - **Brushing Aid:** Fun color themes, cute tooth shapes, and cartoon smileys make brushing an enjoyable activity for kids. - **Safety Equipment:** Made from durable PVC, high-quality borosilicate glass, and non-toxic sand, it's perfectly safe for children. Tested for durability, the bases at both ends are resistant to detachment and breakage, making it an ideal timer for kids' tooth brushing. - **Multiple Uses:** Perfect for children's tooth brushing, it can also be used during study or play to help children work more efficiently and improve their sense of time. A great gift for kids and friends. - **Sand Timer Instructions:** You will receive 2 pieces of 3-minute sand timers. Shake the sand timer to loosen all the sand, then flip it over on the table to start the clock. Please note: As non-precise measuring instruments, allow for a 10% time deviation.