- Double Line Notebook (): 20 lines, 12.5 mm and 8.4 mm spacing
- Math Notebook (): 2 columns x 27 lines, 75.4 mm column width
- Grid Notebook (): 11 grids x 15 lines, 15 mm grid size, 14.5 mm line spacing
- Composition Notebook (): 19 grids x 19 lines, 8 mm spacing
| Width | 18.0 |
| Height | 1.0 |
| NetWeight | 0.345 |
| Brand | Duoli Doctor () |
| Models | Two versions shipped randomly (Original and New) |
| Main Difference | Cover paper weight differs; Original uses 136g kraft paper, New uses 200g kraft card paper |
| Paper Weight Definition | Weight per square meter of paper |
| Safety & Environment | Eco-friendly, safe, eye-protecting |
| Binding | Cold glue binding, no staples (prevents page loss and injury) |
| Paper Type | Soft light control paper compatible with pencil, gel pen, fountain pen, highlighter |
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| Size | 16K (260 x 185 mm) |
| Number of Sheets | 24 sheets including cover |
| Measurement Note | Manual measurement may cause slight deviations |
| Features | Upgraded no-staple design prevents page loss and damage |
| Personalization Fields | Name, Class, School, Student ID printed on each notebook |
| Compatible Writing Instruments | Pencil, gel pen, fountain pen, highlighter |
| Packaging | Random shipment of new or old version; minor updates may exist, actual product prevails |