Feature: 1. Sliding Cover: Function calculator with sliding hard cover, sliding design to defend the keys from damage. 2. Multiple Calculation Functions: The multifunctional scientific calculator has multiple calculation functions to meet different calculation needs, suitable for students' use. 3. Dual Power Supply: Calculators use solar and battery dual power supply, double safety uninterrupted power supply, environmental protection and energy saving. 4. Clear Buttons: The letters on the buttons of Students scientific calculators are very clear and convenient for you to use, giving the most comfortable experience. 5. Plastic Material: Function calculator is made of plastic material, which is wear resistant and durable, not easy to damage, and can be used for a long time. Specification: Item Type: Scientific Calculator Material: ABS Product Size: Approx. 17 x 9 x 3cm / 6.7 x 3.5 x 1.2in Battery: Button Cellx1 (Ship with Inbuilt Battery) Battery Type: LR44 Battery Capacity: 160mAh. Package List: 1 x Calculator (Ship with Inbuilt Battery)1 x User Manual