Specifications Material: acrylic Keys: 3, 4 (optional) Knob: 3 keys + 1 knob, No knob in 4 keys Color: black, clear (optional) Current and voltage: DC 5V/1A Interface: Type-C Axle: Outeum red switch Product size: 100x35x30mm-5cm/3.94x1.38x1.18-1.97in Product weight: 58-68 grams Product Red Switch RGB Macro Custom Gaming Keyboard Knob 3 Key + 1 Knob / 4 Keys Programmable Hotswap One-handed Mechanical Keypad for PS Drawing Feature: 1. Type-C to USB interface, no driver required, plug and play. 2. Button customization, can be set according to customer requirements. The customer can provide the setting content to our customer service, or it can be designed by the customer. We send the setting software, provide video operation instructions, and can also provide remote technical assistance. 3. This button can also be used to achieve complex operations, and is a good helper for office, games, music, media, and industrial control. 4. Mechanical key shaft, durable. 5. Support ergonomic design. 6. Support hot swap. 7. Available operating systems: for Windows 8. RGB lights can choose three modes, monochrome, marquee, off. You can let the customer service set it up, or you can specify to help you set it up. Specification: Material: acrylic Keys: 3, 4 (optional) Knob: 3 keys + 1 knob, No knob in 4 keys Color: black, clear (optional) Current and voltage: DC 5V/1A Interface: Type-C Axle: Outeum red switch Product size: 100x35x30mm-5cm/3.94x1.38x1.18-1.97in Product weight: 58-68 grams Programmable Keypad: All keys are programmable. All key functions of the standard Windows keyboard can be set, and a complex combination of shortcut keys can be realized with one key. 3 keys and 1 knobs are programmable: 3 keys, the knob is pressed, clockwise rotation, counterclockwise rotation can be customized. RGB LED colorful lighting mode can also be set to change different lighting effects. Knob function: The knob can set functions such as zoom in and zoom out, previous track, next track, volume up, volume down, pause, play, etc. The one-handed macro mechanical keyboard is easy to operate and easy to carry. (Note: The 4-key keyboard has no volume knob) Mini size, effectively saving desktop space. Detachable USB cable. You can connect a keypad (plug and play) and another keyboard at the same time on the same computer and they won& 39;t interfere with each other. Wide range of applications: The mini keyboard is suitable for office, gaming, music, media, industrial control, laboratory, production line testing and other fields, and is a good helper for many other types of users such as designers and video editors. Note: The 4-key keyboard has no volume knob. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you Please allow 1-2cm measuring deviation due to manual measurement.Included1x keypad 1x data cable