USB Non-synchronous Notebook Computer Multi Function Keypad with 19 Keys, Multi Function Keypad

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1. Ultra thin notebook computers caps design, Aesthetic appearance. 2. Durable structure, long life 3. Non-synchronous digital input, no affection to the other keyboard 4. Button d esign: 19 bonds 5. Key trip: 3.0+/-0.3mm 6. Surcharging height: 0.25+/-0.05mm 8. MAX pressure: 55+/-5g 9. Operating temperature: 0~55 degree C 10. Key life: 800 million and above 11. Product size: 100*140*15mm Show more