Surely, our product can allow children to show their creative potential to prevent your apartment to be "decorated". And the notes will automatically disappear after 30-40 minutes, which it is convenient. And the brightness and clarity depend on the distance from the marker to the tablet and the tilt angle. Surely, our product can prevent the waste of paper because it can be reused. It can also be used for a long time because it is made of wear-resistant and anti-wrestling material. It is made of plastic, is durable to use. There are three sizes of the product to choose from. This product is suitable for kids. Item Name: Luminous Drawing Board Material: Plastic Features: High Sensibility, Eco-friendly, Portable Size Details: S Size: 20cm x 14cm x 0.8cm/7.87" x 5.51" x 0.31" (Approx.)(A5) M Size: 29.5cm x 21cm x 0.8cm/11.61" x 8.27" x 0.31" (Approx.)(A4) L Size: 41cm x 28cm x 1.5cm/16.14" x 11.02" x 0.59" (Approx.)(A3) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Luminous Drawing Board 1 x Pen (Built-in 3 x Button Batteries) 1 x Manual 1 x Copy Board Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store