A5 PU Leather Zipper Organizer & Refillable Notebook with 8-Digit Calculator, Multi-Card Slots & Receipt Compartment 1. A premium PU leather zippered organizer: Integrates an A5 ring binder notebook, 8-digit calculator, invoicereceipt liner, and multiple card slots, designed specifically for business commuting and office scenarios. 2. Integrated Calculator: Features an 8-digit LCD display and silicone keys, powered by a replaceable button cell battery (included). Calculator casing made of ABS engineering plastic. 3. High-Quality Metal Zipper: Ensures smooth openingclosing. Easy to use and resistant to rust during prolonged usage. 4. 80g Cream Dowling Paper: Smooth writing, prevents ink bleed-through, and offers reduced glare. 5. Premium Leather: Clear grain pattern, water-resistant, anti-slip, and abrasion-resistant. Features a delicate feel and exquisite stitching. 6. Dimensions: A5 size 252 x 180mm; inner page size 207 x 140mm. 7. Number of Sheets: 100 sheets 200 pages. 8. Material: Waterproof PU surface.