What unique printing feature does the Sharp EL1801V offer?

It prints at approximately 2.1 lines/sec. in two colors, with positive numbers in black and negative numbers in red.

What type of display does the Sharp EL1801V calculator have?

It has a 12-digit blue fluorescent display with punctuation.

Calculator Plain Paper, 2.25" X 150'

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Sharp EL1801V Two-Color Printing Calculator, 12-Digit Fluorescent, Clock/Calendar Key, 2-color Printing (Black/Red)

Large Display - 12-digit blue fluorescent display with punctuation
Quick and Crisp 2-Color Printing - Prints at approximately 2.1 lines/sec. in two colors (positive numbers in black, negative numbers in red) on standard size paper rolls
One Touch Change Calculation Function- Displays and prints the change
Calendar / Clock Function - Displays and prints date and time
Cost-Sell-Margin Keys - Allows for convenient calculation of cost price, selling price, and margins
Professional Keyboard - Layout allows for quick calculations
Built-in Grand Total Key - Adds the grand total of several calculations
Average Key -Calculates the average of several prices
4-Key Memory - Includes memory plus, memory minus, and recall and clear memory keys
Additional features include tax keys, right shift key, floating (F) or fixed decimal (6, 3, 2, 1, 0), add (A) mode, item count, round up/down/off selector, AC power, and heavy-duty paper holder