年龄范围
2-4 年, 5-7 年, 8岁至13岁, 14岁以上
Color
Red / White/Orange customsize
Material
environmentally-friendly and no toxicity
Pen's surface
cover the UV
Consumer
Children,Blind people,languages learner
Record Aduio format
mp3,REC
Transfer Interface
Micro /Type-c