Question 1

size difference between reg and X large?

Accepted Answer

I can't tell you that. But the digits on the display screen are 1 full inch tall and 1/4 inch wide. The numerals are a dark black and have a better contrast against the grey background than most LCD displays. The keys on the calculator are 7/8 of an inch wide by 5/8 of an inch tall. The numerals on the keys are a bright white that are between 3/8 and 1/2 an inch high. The plus and equal keys are 3/4 inch wide and a full inch tall. I really like the calculator. It is great for an older person with vision difficulties. I have glaucoma and my vision is diminished. The calculator probably would not be sufficient for someone who is legally visually impaired with 20/200 vision or less. I think it should work for someone with macular degeneration because the numerals are large enough to be seen using one's peripheral vison. I hope this helps.

Question 2

Do the keys have "tactile feedback," ie can you feel a "click" when key is pressed or are they "mushy?"

Accepted Answer

Yes, you can definitely hear a slight click every time a key is pressed. They are definitely not mushy as they are plastic.

Question 3

How is the battery replaced? (no images showing battery door)

Accepted Answer

It is a rechargeable battery and charged via solar cell.  Probably not much of a battery at all because it does not need one.  Any place that has light will have enough light to run this calculator.  Mine has 2 phillips screws near the top on the rear of the unit but I have not taken it apart and will never have a reason to because if there is not enough light to run it then, I will not be able to read the digits anyway.  (The display is a nice, large LCD)

Question 4

Without an “off” button won’t the battery be in constant use?

Accepted Answer

No.  The calculator shuts off after about 7 minutes of not being used.  I just tested the shut off.  (The calculator operates on both battery and solar power.)

ASIN	B08R6ND2QV
Best Sellers Rank	1,073 in Stationery & Office Supplies ( See Top 100 in Stationery & Office Supplies ) 5 in Basic Calculators
Brand Name	CATIGA
Calculator Type	Standard Function
Colour	Pink (CD-2786)
Customer Reviews	4.7 4.7 out of 5 stars (1,190)
Display Type	LCD
Enclosure Material	Plastic
Item Dimensions L x W	15.2L x 12W centimetres
Manufacturer	Jeoly / Catiga Electronic Co. Ltd
Manufacturer Part Number	CD-2786-12
Model Name	CD-2786
Model Number	CD-2786-12
Number of Batteries	1 LR44 batteries required.
Number of Items	1
Power Source	Dual Power
Screen Size	4.5 Inches
UPC	813629029990
Unit Count	1.0 count

CATIGA 12 Digit Desktop Calculator with Large LCD Display and Sensitive Button, Dual Solar Power and Battery, Standard Function for Office, Home, School, CD-2786

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