The Texas Instruments SR-16 is a scientific calculator but lacks the trigonometric functions. It was produced and sold for a relatively short period of time and it is less frequently seen than other models.
The calculator works with either 3 rechargeable AA batteries (regular batteries are OK, no need for flat top) but it also works well with regular alkaline AA batteries.
This particular calculator comes in its original box and has seen probably little actual use (if any) since it does not show the normal signs of use. The original AC adapter is also included.
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