Calculator, Battery Operated, Statistical Functions, Solar Powered, Display: Monochrome, :
From Amazon
Texas 30RS/TBL/5E1 TI-30 ECO RS Scientific Calculator
Conrad Electronic
Texas Instruments TI-30 ECO RS CAS calculator Black Display (digits): 10 solar-powered (W x H x D) 71 x 13 x 147 mm
Calculators Direct
Texas Instruments 30 ECO RS Scientific Calculator