1. Voltage: DC 5V
2. Current: <=60mA
3. Number of keys: 20 keys
4. Key life: >=50 million times
5. Key structure: mechanical black shaft
6. Interface: USB
7. Material: ABS
8. Size: 10.2x14x2.5cm
9. Cable length: about 1.5m
10. Applicable: bank securities/industrial computer/financial accounting, etc.