Specification 

• Dual Usage: Portable calculator and USB keypad

• 12 digits LCD screen when in use as standalone calculator

Via USB interface it can be used as a numeric keypad for computers

• Longer distance between keys, 19 (mm) length, for comfortable and handy numeric data input. Perfect for both usage          as USB keypad or standalone calculator

• Dual power system - either powered by solar power or batteries

• 19 keys standard layout just like what you found in any standard full-size keyboard

• Special Tax hot keys: Tax+ and Tax- buttons for your one press of tax calculation

ResultSync(TM) Technology - transfer the calculation result right into PC by pressing the [send] button

• BS key is built for your speedy 'Back Space' correction needs

• Power saving management with Auto Power-off: while the keypad calculator is not connected to the computer via USB,       it will automatically power off after 6 minutes of idle

• Non-synchronized function included, meaning that the keypad's Num-Lock is independent from your laptop's Num-             Lock, you can input letters by laptop's keyboard and input numbers by keypad at the same time.

• Fully plug-and-play USB keypad with support of hot swapping