Main features: -Small size, light weight, easy to carry. -Light energy blackboard, dust-free, innovative writing, environmentally friendly and healthy, does not hurt your eyes. -Delete with one click, convenient and fast. -Protective frame, anti-falling and anti-damage. -Writing feels smoother and the writing effect is more realistic. -Simple operation, suitable for various needs of people of different ages. Specifications: Material: ABS; Color: red; yellow; Size: Type1 is monochrome handwriting; Type 2 is color handwriting; Operating temperature: 0 - 4; Input pressure: 100 - 200g; Reflectivity: 25-30%; Battery information : Battery type: CR2032 button battery; Dimensions: Product weight: 0.15 kg; Product size: 27.50 x 19.00 x 1.00 cm; Packing weight: 0.18 kg; Packing size: 51.5 x 33.5 x 25 cm; Package contents: 1 x writing pad; 1 x writing pen