













🧮 Big Display, Bigger Impact — Calculate Like a Pro!
The Desktop Calculator OS-6815 features a large 5-inch angled LCD display and oversized buttons designed for accuracy and ease of use. Powered by both solar energy and an included AA battery, it ensures uninterrupted performance. Made from durable ABS plastic, it withstands everyday wear and tear, making it ideal for office, home, or school use.










| Number of Batteries | 1 AA batteries required. |
| Display Type | LCD |
| Power Source | Solar & AA Battery |
| Screen Size | 5 Inches |
| Calculator Type | Standard Function |
| Item Dimensions L x W | 7.2"L x 6.1"W |
| Material | Plastic |
| Color | OS-6815-1 |
C**L
ADD YOUR NUMBERS
Exactly as described: a good basic calculator, uses an easily replaceable battery, easy to see display, keys are of good size. Could do without the Grand Total appearing at times (can't be turned off). Good buy for the price.
M**E
big numbers easy to use
great, big numbers easy to use
T**N
Great calculator!
Gift for hubby, he's a business owner and uses it in his office. He really likes that the calculator has larger buttons and bigger screen. He says it works great! It also works by solar and battery too!
K**Y
Large display. Easy to use.
Works like a charm. Large display. I like the idea that solar power is backed up by batteries!
O**E
Feels Cheap
Overall not a bad calculator. The large size makes it easier to use. I had issues with the fact that if you are not in a direct light source it would not function. I also found the keys no to be very smooth when pressing. Not a bad calculator for the price but does have some issues.
M**H
Great desk calculator
Right size for my desk and easy to see the numbers. Price was just right.
J**O
Excellent buy
Get this if you have space on your desk. Best darn calculator I've ever owned. Big buttons and big read-out. You'll love it!
M**N
Full sized keys are nice for old fingers !!
Full 10 key with the works as far as calculations are concerned. Keys seem set to good touch, sized for solid finding when having to enter multiple numbers and on/off is nice to have. Great for older users who are not so agile.
Trustpilot
2 months ago
1 month ago