Keycap Type:PBT heat sublimation keycaps Connection:USB wired Interface Type:Key Cable Separation Name:Mechanical Numeric Keyboard Number of Keys:33 Cable length:1.5 meters Weight:280g Lighting type: color light (4 kinds of light effects) Lighting Adjustment:FN+5 Current/Voltage:Less than 200mA/DC 5V Support system:WIN7-11,XP,,etc. Type:B:Red Switch Colour:Blue & White Material:plastic Size:about 138x120x37mm Package Contents: 1 * wired numeric keypad 1 * USB data cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.