CASIO FX-87DE Plus 2nd edition Wissenschaftlicher Rechner Taschenrechner | MediaMarkt
Casio FX-87 - Calculadora científica (con panel solar y batería), color negro : Casio: Amazon.es: Oficina y papelería
Standard Japanese scientific calculator CASIO Scientific Calculators - Specification: Auto power off function, Mass (g): Approximately 90g (including batteries), Power Supply: Solar cell and button cell (LR44 × 1), Eco Mark Certification: