[ 6 Different Sand Glass Timer]--1 minute, 3 minutes, 5 minutes, 10 minutes,15 minutes,30 minutes ,convent for different circumstance,perfect for reading, cooking and baking, tooth brushing, game playing and exercise timing. [Shock-Resistance Hourglass Sand Timer-Thick glass material ]--Our timer is made of durable Thick glass materials ,sea sand , plastic cover, service life last longer,Sand are a very effective visual prompt that helps improve concentration and time management. [ as Time Management Tool]--this can help your kids develop a strong sense of time,Good idea to Help your kids do things more efficiently,Refusal to delay . [Widely Application]-- The timer can be used for cooking, games, classroom, kids study ,exercising(yoga or psychological training) .Also can be used as home office decoration, practical timing tool in .Great children and friends. Colour:Black+green Material:Plastic + glass Size:About 9.5cm Package Contents: 6*Sand Timer(1/3/5/10/15/30 times) Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.