🔢 Calculate smarter, not harder — power your productivity with Mr. Pen!
Mr. Pen Standard Function Calculator combines a durable plastic body with a large 12-digit LCD screen and oversized responsive buttons for fast, accurate calculations. Powered by both solar energy and battery, it ensures reliable performance in any well-lit environment. Ideal for professionals and students alike, it’s the perfect tool for budgeting, office tasks, and quick math on the go.
N**L
Does what it is supposed to do.
This is great. Small but works very well and can just throw it in the bag and go about my day.
G**O
Surprisingly Sweet
I am taking a microbiology class and needed a calculator that I would be okay getting E. Coli on. My other qualifier is that it had to be in my favorite color. I was surprised that this came packaged with a handwritten note thanking me for my purchase. That’s classic.It’s what you would expect from a simple, solar-powered calculator.Cute, compact, and inexpensive just in case anything unsavory drips onto it.I was a little confused that the commas were at the top of the numbers rather than at the bottom but that doesn’t bother me at all.Recommended for simple quick maths.
M**N
Simple calculator that works but also comes apart easily
The calculator is a convenient size and worked right away out of the box. Perfect for simple math functions.Note: anyone using this with students or curious populations, the device can come apart easily. I teach in an alternative school and one student dismantled the calculator within a few minutes and removed the metal cover. I've not had that problem with other plastic calculators.
T**S
Cute
Works well and is small
S**E
The perfect inexpensive calculator
Great product for our special needs son at a wonderful price! He loves it and so do we. This product was created by a group of teachers and they back their product.
G**V
Defective
Besides buttons being in the wrong spot works pretty well.
J**E
Works great
I really like this calculator.
K**N
12-Digit Pocket Size
What a find! A 12-digiit calculator that's pocket-sized! And with a backspace key, that makes error correction easy! The price was also terrific. I also liked the color (blue). The 12 digits span the whole width of the display, unlike in most calculators, where there's a blank space on the left side. There was one minor flaw, though, both the "AC" key and the "C" key were labelled "AC," unlike in the photo, although they function properly.
Trustpilot
2 weeks ago
1 month ago
