Folder with Calculator Antra A5 model 723, navy blue

Antra A5 folder with built-in calculator, model 723, navy blue is a compact document folder sized for A5 papers and notes that integrates a basic solar-powered calculator into the cover. The folder provides a protected writing surface and a convenient place to store loose sheets, memos and receipts while keeping a simple numeric tool readily available for quick calculations during study, meetings or field tasks.

Advantages

The integrated calculator saves time by providing immediate access to basic arithmetic functions without needing a separate device. Its A5 format keeps documents compact and portable, fitting into backpacks and briefcases. The rigid cover offers a stable writing surface and protects papers from folding or damage. The navy blue finish gives a professional, neutral appearance suitable for office or academic environments.

Suitable for

• Students taking notes and doing on-the-go calculations
• Office workers handling receipts, invoices or quick estimations
• Field personnel who need a portable writing surface and simple math functions
• Meetings and conferences where quick numeric checks are required

Key specifications

• Size: A5-format folder suitable for A5 papers and notepads
• Color: navy blue cover
• Integrated calculator: basic arithmetic functions for addition, subtraction, multiplication and division
• Power source: solar-assisted calculator (no separate battery required under sufficient light)
• Cover: rigid or semi-rigid protective writing surface
• Storage: space for loose sheets, notes and small documents

How to use

Place A5 documents or a notepad inside the folder and close the cover to protect contents. Use the cover as a stable writing surface when taking notes or filling forms. Operate the built-in calculator by exposing it to light so the solar panel can power basic arithmetic functions; press the calculator keys to perform calculations as needed. Keep papers organized inside the folder to maintain a neat work surface and prevent creasing.

Usage recommendations

For reliable calculator operation, use the folder in well-lit environments or near a light source. Store loose receipts and small documents flat inside the folder to avoid folding. Clean the calculator surface and cover with a soft, dry cloth; avoid liquids and abrasive cleaners. Choose the Antra A5 folder when you need a compact combination of document protection, a writing surface and simple calculation functions.