Description 1.Made of food-grade silicone material, it is lightweight and durable, soft and skin-friendly, not easy to deform, fits the human body curve, and is comfortable to wear.An orthotic for children, adults, men and women.No binding. Easy to wear, for children and students to study at home, to correct sitting posture, to prevent hunchback. Product name: Smart Correction WizardModel No.: MS-A9 LCD counting modelRated input: 5V/1AOperating time: approx. 1 week (4 hours of wear per day)Net weight: approx. 90g (including battery and neck collar)Function: Spinal correction, stretching and chest expansion, improving hunchback, protecting eyesight Material: Food grade silicone collar Imported ABSCharging interface: USB universal interfaceBattery capacity: 200 mAhSuitable for children, adults, men and womenPackage Included:1* Invisible Smart Posture CorrectorNote:1. Due to manual measurement, there may be a slight tolerance of 1-3cm.2. Due to difference between different monitors, the picture may not reflect the actual color of the item.Our products are made with the highest quality materials and are designed to provide you with the best possible user experience. We strive to ship out all orders within three days of purchase, and the estimated delivery time is 8-15 days.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 specificationsWe want you to be completely satisfied with your purchase, so if you have any questions or concerns, please dont 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