10-PACK - Handheld electronic pocket calculators with two-way power, solar and AA battery (included), easy-touch buttons, and auto-off function in 3 vibrant colors: blue (3), pink (3), black (4); Remove protective wrap from battery in chamber.LCD DISPLAY - Angled flat panel LCD screen provides optimal viewing angle that prevents glare from overhead lightingDUAL-POWERED - Two-way power, solar and AA battery (included); Screen requires bright light for solar battery to charge and maintain its charge; Remove protective wrap from (included) battery for uninterrupted useDURABLE - ABS plastic casing and separately-molded smooth-response keys; 2.5" x 4.5" x 0.75" (with angled screen)CONVENIENT - Lightweight with even weight distribution for comfortable calculations while using on the desktop or handheld.