Description: . Feature: material keyboard can be stable and durable for us to use. Support plug and for play, splash-proof, waterproof and wear-resistant. Liquid silicone for key, sensitive and comfortable to type. Fit for Laptop PC, it is applicable for Windows XP/7/8/Vista. Numeric Keyboard only, other accessories demo in the picture is not included Specifications: Item Type: Numeric Keyboard Material: ABS Size: 135x87x32mm/5.3x3.4x1.2in Color: Black Interface Type: USB Connection Mode: USB 2.4GHz wireless Transmission Distance: 10m/32.8ft for Key Service Life: 5 million times Power Supply: 1xAAA battery 1.5V(Not Include) Applicable system: for Windows XP/7/8/Vista Quantity: 1 Pc Note: No retail package. Transition: 1cm=10mm=0.39inch Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package Includes: 1 x Numeric Keyboard 1 x User Manual