1Lithium battery charging, 2000mAh large capacity, charging 2 hours, sharpening pen more than 300 times. 2The tool holder can be removed and replaced to extend the life of the pencil sharpener. 3Through actual measurement and repeated experiments, the length of the nib is more in line with the use habits of primary school students, and writing is faster and easier. 4Charging electric eraser, lithium battery charging, a variety of scenes available, eraser thickness adjustable, drawing and painting are applicable. 5Chargeable electric vacuum cleaner, effectively cleaning desktop debris. 360 rising wind direction, dust-free, dust-absorbing smooth.