1. Material: Environmentally friendly ABS, electronic components 2. Features: large screen display, 10 digits, dual power supply, large buttons 3. Display digits: 10 4. Built-in solar battery: 200mAh battery 5. Battery: L1131F button battery x 1 (battery included in delivery) 6. The key numbers are made of German ink, which is durable 7. Fast IC, fast computing speed, low energy consumption 8. Good photoelectric conversion efficiency, can provide sufficient power, more convenient to use 9. High-definition LCD display, clear display 10. With anti-slip pad on the back, stable placement 11. Product size: 12.1 x 8.7 x 2.8 cm 12. Weight: 100 grams
