Plug Play; easy and convenient. Apply to all computers with a USB interface. Keystroke lives up to 5 million times. Thin and compact design: 18-key wired numeric keypad; mini and portable. Design for accidental water spillage. Anti-slip foot pads greatly protect the keyboard from slipping. Ergonomic design makes it fit for your fingers and wrist; effectively reducing tiredness from long hours. Support for automatic sleep mode; no on / off switch required. The LED indicator lights up when the device is ready for data input. Product Size: USB It's an ingenious wired number pad; 18 keys; thin and compact. Plug amp; Play; easy and convenient. Keystroke life is up to 5 million times. Tilt design and non-slip foot pads; make durable. Besides; its mini and portable design is another plus point; which makes it an ideal companion for business trips. Features: Plug amp; Play; easy and convenient. Apply to all computers with a USB interface. Keystroke life up to 5 million times. Thin and compact design: 18-key wired numeric keypad; mini and portable. Design for accidental water spillage. Non-slip foot pads greatly protect the keyboard from slipping. Ergonomic design makes it fit for your fingers and wrist; effectively reducing tiredness from long hours. Support for automatic hibernation; no on / off switch needed. The LED indicator lights up when the device is ready for data entry. Specification: Material: ABS Number of keys: 18 keys Life key: 5 million Interface: USB Voltage: 5V Current: 0.25A Cable length: 1.35 m Item Size: 8.5 * 14 * 2 cm / 3.35 * 5.51 * 0.79 in (L * W * H) Item Weight: 76g / 2.7 ozPackage size: 14.8 * 9.3 * 3.5cm / 5.83 * 3.66 * 1.38 in (L * W * H) Package weight: 100g / 3.53 ozPackage List: 1 * numeric keypad Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Dadangjia