8/12-Digit Desktop Calculator promotional dual power calculator
APPEARANCE:
- black/white color options, other custom colors are welcome.
- hard PCB board
- Well-spaced keyboard with contoured keys for easy operation
FUNCTIONS:
- Change sign (+/-) key simplifies entry of negative numbers
- Square root key is useful for schoolwork
- 4 keys memory and GT function
- Percent key
- Automatic power-off function to save power
- Battery and solar powered for operation anywhere
- 12 digit version: backspace key to correct the wrong numbers entered
