1. Voltage: DC 5V 2. Current: <=60mA 3. Number of keys: 21 keys 4. Key life: >=50 million times 5. Key structure: mechanical black shaft 6. Interface: USB 7. Dimensions: 139.5x103x25.9mm 8. Cable length: 1.5m 9. Applicable: bank securities/industrial computer/financial accounting, etc.
