The number pad is plug and play, which is convenient to use.The number pad is sensitive, bringing you smooth using experience.Made of ABS material, the number pad is eco-friendly and durable to use.The length of the number pad is 13cm, width is 8.5cm and height is 2.2cm, so you can carry it outdoor with you conveniently.The number pad is suitable for many types of computers.Item Name: Wireless Number PadMaterial: ABSModel: 268Color: Black, WhiteNumber of Keys: 18 KeysWorking Mode: 2.4GHz WirelessBattery: 1 x AAA Battery(Not Included)Features: Plug Play, Sensitive, Ultra-thinSize Details: 13cm x 8.5cm x 2.2cm/5.12" x 3.35" x 0.87" (Approx.)Notes:Due to the light and the screen setting difference, the item's color may slightly differs from the pictures.Please allow slight dimension difference due to the manual measurement.Package Includes:1 x Wireless Number Pad(Bulit-in Receiver Included)