Specification:Item Type: Fluorescent Drawing BoardProduct Material: PaperBattery Model: LR41 x 3 (Shipped With Built in Battery)Battery Type: Button BatteryBattery Capacity: 10mAh x 3How to Use:1. Absorbing light: Absorbs the energy in visible light, such as bright sunlight, bright lights and purple lights, etc. The intenser the light, the more energy it can absorb.2. Light storage: store the energy in the light in the body like a rechargeable battery, and slowly release a faint light, which can be saturated in 1‑10 seconds under a strong light source.3. Luminescence: When the environment becomes dark and the brightness of the surrounding light Package List:1 x Fluorescent Plate1 x Highlighter3 x Die Card1 x Chinese And English User Manual