Features: 1.Dual Mode Connection: Keyboard supports both wired USB and wireless Bluetooth dual mode connection, free choice, detachable USB cable, get rid of the cable, more convenient to use. 2.Programmable Keyboard: All keys are programmable, all key functions of standard for Windows keyboard can be set, complex combinations of shortcut keys can be realized with one key. (Custom programmable key functions include regular 104 keys, 8 web navigation keys, 8 multimedia shortcut keys, keyboard lock, for Windows lock, etc.) 3.Knob Function: Not only can be rotated and adjusted at the same time can also be used as a key, the knob can be set to zoom in and out, up song cut song, following volume plus, volume minus, pause, play and other functions. 4.Mini Size: Mini size and portable, effectively save desktop space, you can connect both the keypad (plug and play) and another keyboard on the same computer, they will not interfere with each other. 5.Wide Range of Applications: Mini keyboard is suitable for office, games, music, media, industrial control, laboratory, production line testing and other fields, suitable for designers and video editors, etc. specification:Item Type: 12 Key Mechanical Keyboard Material: Acrylic Key Type: 12 Keys Mechanical Keyboard, 2xKnob (Knob Can Be Pressed As a Key) Key Switch: Red Switch Applicable Equipment: Computer General Purpose Battery Type: Built in 500mAh Lithium Ion Battery PackageList:1 x Keyboard 1 xData Cable