Feature:1. 2.4GHz Wireless: The number keyboard adopts 2.4GHz wireless technology, plug and play, and no device driver is needed, so you can use it with confidence.2. 22 Keys: Wireless numeric keypad adopts 22 keys professional design and is suitable for banks, schools, companies, etc.3. Stable Transmission: USB mouse numeric keypad ensures stable signal transmission, which is a digital keyboard without delay and has an effective transmission distance of 10m.4. Wide Compatibility: Number pad mouse combo is compatible with for Android tablet,for Linux,for Win XP,for Win Vista,for Win 7,for Win 8 and for Win 10 series.5. ABS Material: The wireless number pad mouse combo is made of ABS material, which is durable, compact and slim, and easy to carry.Specification:Item Type: Number Pad Mouse ComboMaterial: ABSConnection Mode: 2.4G WirelessEffective Distance:10mNumber of Keys: 22 KeysMouse Resolution: 1200DPIBattery Type: 1 x AAA (Keyboard) ,1 x AA (Mouse) Alkaline Battery (not Included).Package List:1 x Number Pad1 x Mouse1 x Receiver1 x User ManualNote:Shipping without batteries.