1、15 keys 3 Knob: This gaming keyboard is designed with 15 keys and 3 knobs. Knobs can be set for functions of zooming in/out, song skipping, volume control, pause and play, etc. 2、Programmable Keypad: This mini keypad is programmable, and users can bind common operations or specific commands to keys to achieve multistep operations with one key, improving work or gaming efficiency. 3、Blue Switch: This macro keypad adopts blue switch which ensures fast feedback and long durability. Great at clicking and quick combo operation in the game, providing immersive gaming performance. 4、Hot Swappable: This programmable macro keypad features hot swappable design which allows users to replace the keycaps or switch. Detachable USB cable design offers great flexibility and convenience. 5、Wide Application: This macro custom keypad is suitable for graphic design, video clip, computer graphics, software shortcut keys, zoom in and out, parameter adjustment and so on. Item Type: Mini Custom Keypad Material: Acrylic Number of Keys: 15 Keys and 3 Knobs (Knob Can Be Pressed As A Button) Connection: Wired Connection (Keyboard and Cable can be Separated) Cable Length: Approx. 1 Meter / 3.3ft ( Manual Measurement, Slight Error May Exist ) Macro Programming Software Download: Copy Software in USB Flash Drive(Included) to Computer 1 x Mini Custom Keypad 1 x USB Cable 1 x USB Flash Drive of Driver 1 x User Manual