It is an ingenious wired numeric keypad, 18 keys, thin and compact. Plug-and-play, simple and convenient. Keystroke life is up to 5 million times. Tilt design and non-slip foot pads, make it durable. Besides, its mini and portable design is another plus point, which makes it a perfect companion for business travel.  Features: Plug-and-play, simple and convenient. Apply to all computers with USB interface. Keystroke life up to 5 million times. Thin and compact design: 18-key wired numeric keypad, mini and portable. Tilt design for accidental water spill. Non-slip foot pads greatly protect the keypad from slipping. Ergonomic design makes it fit for your finger and wrist, effectively reducing the fatigue caused by intensively long-hour working. Support automatical hibernation mode, no power button needed. The LED indicator light is on when the device is ready for data entry. Specification: Material: ABS Key number: 18 keys Key life: 5 million Interface: USB Voltage: 5V Current: 0.25A Cable length: 1.35m Item size: 8.5 * 14 * 2cm / 3.35 * 5.51 * 0.79in (L * W * H) Item weight: 76g / 2.7oz Package size: 14.8 * 9.3 * 3.5cm / 5.83 * 3.66 * 1.38in (L * W * H) Package weight: 100g / 3.53oz Package List: 1 * Numeric keypad Note: Package list without user manual