🔵 Crunch numbers with style and precision — the calculator that clicks with you!
Mr. Pen Mechanical Switch Calculator combines a large 12-digit display with tactile mechanical keys for fast, accurate data entry. Its compact size and battery-saving auto shutdown make it perfect for office, school, or home use, delivering reliable performance with a satisfying click every time.
| Display Type | LCD |
| Compatible Devices | Most devices with a standard calculator function, including computers, laptops, and smartphones |
| Power Source | Battery Powered |
| Calculator Type | Standard Function |
| Item Dimensions L x W | 6.2"L x 4.4"W |
| Material | Plastic |
| Color | Blue |
J**J
Exceptionally practical and satisfyingly usable.
Exceptionally practical and satisfyingly usable. Always get compliments for this very mechanical calculator of the mathematical means; of how splendid it appears. Worth every shilling present; Durable, button size well, easy to use.
K**S
The best green
Cute and vey vibrant colour (green)Not sure I can find the off button so you are about to require batteries quicker than expected
Trustpilot
2 weeks ago
2 days ago
