Product Name: Hourglass Material: glass + wood + metal Color: black Product Size: 9.5x9.5x24cm/3.74x3.74x9.44inch Features 1: High quality glass fine sand, thickened protective layer, durable Novel design, unique appearance, smooth and translucent. It is a very meaningful way to educate your child"s sense of time. This sand timer is a perfect gift for your lover or friend. Note: 1. The hour glass has a timing error of about 10%, which is normal and higher than the production standards of the hourglass industry. 2. It is normal for sand to hang on the wall or get stuck, which can be relieved by bouncing the hourglass or placing it in the sun for ventilation. 3. The size of the hourglass timer is measured by hand, there will be 0.1 to 0.5 inches of error. Package includes. 1 metal solid wood black sand - 60 minutes When shopping, please pay attention to the size and dimensions of the product to ensure that it meets your needs. In the title and , we have provided detailed information about the product, including its features and specifications We want you to be completely satisfied with your purchase, so if you have any questions or concerns, please don't hesitate to contact us. We are here to help and will do our best to assist you. Thank you for choosing our product. We hope you enjoy it