Portable Numeric Keyboard Waterproof Mini Quiet for Notebook Description: Comfortable: The sturdy and structured numeric keypad generates low noise, provides a comfortable feel for pressing and control, and the rubber pads on the back keep the keyboard securely in place. 19 Numeric Keyboard: Support, homepage, bookmark, etc. Backlight in 3 colors, waterproof. Easy to use: No device drivers required, plug and play, no lag or interruptions. Widely compatible: suitable for most types of laptops and computers. Portable Keyboard: Compact, lightweight, perfect for business trips, travel, and everyday use. Specification: Number of Keys: 19 Connection Mode: Wired Operation: 4,5 V-5,5 V Interface Type: USB Cable length: 1,5 m Material: ABS Model: NMD-520i Bright Color: Blue Red Size Chart: Numeric Keyboard: 16 cm x 9,5 cm x 3,1 cm or 6,30 inch x 3,74 inch x 1,22 inch Cable length: 150 cm or 59.06 inch The package includes: 1-piece numeric keypad with cable