BTS desktop calculator sweet color is perfect for students use when back to school .
- black/white/red/orange color options, other custom colors are welcome.
- soft PCB and hard PCB board options
- Roomy keyboard with well-spaced durable plastic keys
- PVC decorative plate
- BTS desktop calculator, promotional style in supermarket/stationary store
- Change sign (+/-) key simplifies entry of negative numbers
- 8 digit version:square root key for is useful for schoolwork, power off key,3 keys memory function
- 12 digit version:backspace key to correct the wrong numbers entered,4 keys memory and GT function key
- Percent key
- automatic power-off function to save power
- Battery and solar powered for operation anywhere