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	B083JR4BRZ
Best Sellers Rank	#1,496 in Office Products ( See Top 100 in Office Products ) #7 in Basic Office Calculators
Brand	CATIGA
Calculator Type	Standard Function
Color	Violet
Customer Reviews	4.7 4.7 out of 5 stars (4,515)
Display Type	LCD
Enclosure Material	Plastic
Item Dimensions L x W	6"L x 4"W
Manufacturer	Jeoly / Catiga Electronic Co. Ltd
Mfr Part Number	CD-2786-12
Model Name	CD-8185
Model Number	CD-8185
Number of Batteries	1 LR44 batteries required.
Number of Items	1
Power Source	Solar Powered
Screen Size	4 inches
UPC	813629029181
Unit Count	1 Count

CATIGA Desktop Calculator 8 Digit with Solar Power and LCD Display, or Home, Office, School, Class and Business, 4 Function Small Basic

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