1.§ Increase Productivity Sand Timer is a time management tool that keeps track of 30-minute work intervals to help you increase efficiency and stay focused. Our productivity timer helps you achieve big goals easily by breaking down your goals and measuring them with hourglass timer intervals. 2.§Sand Timer Product Size: 30 minutes Hourglass Timer size is: H 19cmW 8.5cm, Hourglass Timer top and bottom are made of wood, the container for sand is made of hand blown high borax glass, this material is more crystal clear, the white sand flows inside without lagging, accurately Record the passage of time. 3.§Suitable for Different Needs Hourglass Timer can help your do things more efficiently, a good idea to develop a strong sense of time.30 minutesHourglass Timer is easy to carry around and can help your do things more efficiently, develop a strong sense of time. Great for cooking, classroom use, playtime, sports timer. 4.§Suitable for Multiple Scenarios 30 Minute Hourglass Timer is perfect for timing ' activities such as brushing teeth, studying, cooking, sports, games, relaxing and more. Hourglass timer in different bright colors can be used in classroom, home, desk, office decoration, teacher use, etc., multiple scenes can use it.