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: ABSKey number: 18 keysKey life: 5 millionInterface: USBVoltage: 5VCurrent: 0.25ACable length: 1.35mItem size: 8.5 * 14 * 2cm / 3.35 * 5.51 * 0.79in (L * W * H)Item weight: 76g / 2.7ozPackage size: 14.8 * 9.3 * 3.5cm / 5.83 * 3.66 * 1.38in (L * W * H)Package weight: 100g / 3.53ozPackage List:1 * Numeric keypadNote: Package list without user manual