A fully functional HP 33s Scientific Calculator featuring both RPN and algebraic entry modes. The display is bright and clear, and the keypad responds properly across all tested functions. This model is popular among engineers, surveyors, students, and HP calculator enthusiasts due to its reliability and the classic RPN workflow. The calculator comes with a protective case and shows normal light wear from use. The back label and serial number are intact and legible. Features * HP 33s scientific calculator * Supports RPN and algebraic entry * Large function set: trig, logs, stats, conversions, equation solving * Tested and working * Includes protective case * Serial number: CNA43502498 * Battery compartment clean * Light cosmetic wear consistent with normal use Notes from U.M.M. Finds This unit was tested for poweron, display clarity, and key responsiveness. Photos are part of the descriptionplease review them closely.