Portable Solar Battery Calculator 4 3/4" x 2 3/4"

Made of high-quality plastic, sturdy, the portable calculator with built-in button cell is durable and has a long service life. Ideal pocket size (6.8*2.67") for one-handed use, also light in weight (0.10 lb), easy to carry and store. Both solar and battery power are used by this 8 digit display calculator with silicone button (battery included). The solar panel will fully charge the calculator as long as you use it in a well-lit area.