Product Description: Versatile A4 Document Organizer with Built-In Calculator 1. Spacious A4 Side Pocket: Designed with a large-capacity A4 side pocket, this organizer can easily accommodate documents such as contracts, certificates, magazines, and books. Keep your essential paperwork organized and readily accessible. 2. Integrated Calculator: Featuring a built-in calculator with percentage calculation capabilities and convenient silicone buttons, this organizer is perfect for quick calculations. The portable design allows you to remove it separately, and it includes an auto power-off feature to conserve battery life. 3. Convenient Small Side Pocket: The small side pocket is ideal for storing receipts and invoices, making it perfect for signing contracts and managing paperwork with ease. Enhance your organization and efficiency with this thoughtful design. 4. Multi-Purpose Card Slot: Equipped with a versatile card slot, this organizer allows you to store business cards, bank cards, ID cards, and more. Keep all your important cards in one secure and easily accessible place. 5. User-Friendly Pen Holder: Featuring a convenient pen holder strap design, this organizer ensures your signature pen is always within reach and not easily lost. Carry your pen with confidence and ease, knowing it's securely stored. 6. Plug-In Note Pad Design: The innovative plug-in note pad design is perfectly suited for pad paper, providing a dedicated space for taking notes on the go. Stay organized and ready to jot down important information at any time. Enhance your productivity and organization with this versatile A4 document organizer. Its thoughtful features and practical design make it an essential tool for professionals who value efficiency and convenience in their daily tasks.