Get reliable performance for school or professional work with this Casio fx-991s scientific calculator. Featuring a "Two-Way Power" system (Solar + Battery), you’ll never have to worry about running out of power during an exam.

• Brand: Casio Computer Co., Ltd.

• Model: fx-991s (V.P.A.M. - Visually Perfect Algebraic Method)

• Power: Solar and Battery dual-power system

• Origin: Manufactured in Malaysia

• Condition: Excellent condition, includes original snap-on hard protective cover.

Features 403 functions including calculus, complex numbers, and multi-replay. A great, durable alternative to newer, more expensive models.